ICD-10 CM Training
Neurology
ICD-10-CM Compliance Dates
• ICD-10-CM will be valid for dates of service on or
after October 1, 2015
– Outpatient dates of service of October 1, 2015 and
beyond.
– Inpatient hospital service claims, is effective for dates of
discharge after September 30, 2015
Covered and Non-Covered Entities
• Covered Entities
– Everyone covered by the Health Insurance Portability
Accountability Act (HIPPA)
• Non-Covered Entities
– Worker’s Compensation
– Auto Insurance
– Non covered HIPAA entities are exempt but are
encouraged to adapt the new code set
ICD-10 Code Structure
• 21 Chapters
• Alpha-numeric codes; not case-sensitive
– Codes begin with Alpha letter, A-Z, excluding U
– Common errors
• I verses 1
• O verses 0
• “X” Placeholder
• 3 to 7 characters
– Decimal following 3rd character
ICD-10 Code Structure
• Placeholder “X”
– Used for future expansion of a code
– Fills in empty characters when a 6th and/or 7th character
apply
– The placeholder may be used in different scenarios but
should never serve as the final character.
Example: W19.XXXA Unspecified fall, Initial Encounter
ICD-10 Code Structure
• 7th Character
– Provides specified information regarding the clinical visit
– Is required for certain categories and must be reported in
the seventh position
– May be alpha or numeric
– Has different meanings depending on the coding category
ICD-10 Code Structure
• Laterality
– Some ICD-10-CM codes indicate laterality, specifying
whether the condition occurs on the left, right or is
bilateral.
– If no bilateral code is provided and the condition is
bilateral, assign separate codes for both the left and right
side.
– If the side is not identified in the medical record, assign the
code for the unspecified side.
OGCR section 1.B.13
ICD-10 Code Structure
• “Other” Codes
– Codes titled “other” or “other specified” are for use when
the information in the medical record provides detail for
which a specific code does not exist.
• “Unspecified” Codes
– Codes titled “unspecified” are for use when the
information in the medical record is insufficient to assign a
more specific code.
OGCR section 1.A.9.a.b
ICD-10 Structure
• Excludes Notes
– Excludes1
•
•
•
•
A type 1 Excludes note is a pure excludes note
It means “NOT CODED HERE”
The code excluded should never be used at the same time
When two conditions cannot occur together
– Excludes2
• Represents “Not included here”
• The condition excluded is not part of the condition represented by
the code
• It is acceptable to use both the code and the excluded code
together, when appropriate
OGCR section 1.A.12.a.b
ICD-10 Code Structure
• “Code First” and “Use Additional Code”
– ICD-10 has a coding convention that requires the
underlying condition be sequenced first followed
by the manifestation.
– These instructional notes indicate the proper
sequencing order of the codes.
OGCR section 1.A.13
• The “-” indicates there are additional reporting
options
Most Common Diagnosis Codes
Sleep apnea (adult) (pediatric)
ICD-9 Code
ICD-10 Code
Description
Excludes1
Excludes2
327.20
G47.30
Sleep apnea,
unspecified
•
•
•
•
Applicable to:
• Sleep apnea NOS
•
•
Apnea NOS
(R06.81)
Cheyne-Stokes
breathing
(R06.3)
Pickwickian
syndrome
(E66.2)
Sleep apnea of
newborn
(P28.3)
There are more specific code choice selections below: SEE NEXT SLIDE
•
•
nightmares (F51.5)
nonorganic sleep disorders
(F51.-)
sleep terrors (F51.4)
sleepwalking (F51.3)
Sleep apnea
ICD-9 Code
ICD-10 Code
Description
Excludes1
Excludes2
327.21
G47.31
Primary central sleep apnea
•
•
327.22
G47.32
High altitude periodic breathing
•
327.23
G47.33
Obstructive sleep apnea (adult)
(pediatric)
•
Idiopathic sleep related
nonobstructive alveolar
hypoventilation
•
327.24
G47.34
Applicable To:
• Sleep related hypoxia
327.25
G47.35
Congenital central alveolar
hypoventilation syndrome
327.26
G47.36
Sleep related hypoventilation in
conditions classified elsewhere
327.27
G47.37
Central sleep apnea in conditions
classified elsewhere
327.29
G47.39
Other sleep apnea
Code also any associated underlying condition
Apnea NOS
(R06.81)
Cheyne-Stokes
breathing (R06.3)
Pickwickian
syndrome (E66.2)
Sleep apnea of
newborn (P28.3)
•
•
•
nightmares
(F51.5)
nonorganic
sleep disorders
(F51.-)
sleep terrors
(F51.4)
sleepwalking
(F51.3)
Sleep Apnea Documentation Tips
• Type
– Congenital central alveolar hypoventilation syndrome
– Idiopathic sleep related non-obstructive alveolar
hypoventilation
– Obstructive
– Primary central
– Central sleep apnea associated with underlying condition
– Primary sleep apnea of newborn
Convulsions
ICD-9 Code
ICD-10 Code
Description
Excludes1
Excludes2
780.39
R56.9
Unspecified convulsions
N/A
•
Applicable To:
• Convulsion disorder
• Fit NOS
• Recurrent convulsions
• Seizure(s) (convulsive)
NOS
•
•
•
There are additional code choice selections:
780.31
R56.00
Simple febrile convulsions
780.32
R56.01
Complex febrile convulsions
780.33
R56.1
Post traumatic seizures
abnormal findings on
antenatal screening
of mother (O28.-)
certain conditions
originating in the
perinatal period (P04P96)
signs and symptoms
classified in the body
system chapters
signs and symptoms
of breast (N63,
N64.5)
Convulsions Documentation Tips
• Type
– Simple febrile
– Complex febrile
– Post-traumatic
Multiple sclerosis
ICD-9 Code
ICD-10 Code
Description
Excludes1
340
G35
Multiple sclerosis
N/A
Applicable To:
•
Disseminated multiple
sclerosis
•
Generalized multiple
sclerosis
•
Multiple sclerosis NOS
•
Multiple sclerosis of brain
stem
•
Multiple sclerosis of cord
Excludes2
• certain conditions originating in the
perinatal period (P04-P96)
• certain infectious and parasitic diseases
(A00-B99)
• complications of pregnancy, childbirth
and the puerperium (O00-O9A)
• congenital malformations, deformations,
and chromosomal abnormalities (Q00Q99)
• endocrine, nutritional and metabolic
diseases (E00-E88)
• injury, poisoning and certain other
consequences of external causes (S00T88)
• neoplasms (C00-D49)
• symptoms, signs and abnormal clinical
and laboratory findings, not elsewhere
classified (R00-R94)
Parkinson's Disease
ICD-9 Code
ICD-10 Code
Description
Excludes1
Excludes2
332.0
G20
Parkinson's disease
• Hemiparkinsonism
• Idiopathic
Parkinsonism or
Parkinson's disease
• Paralysis agitans
• Parkinsonism or
Parkinson's disease
NOS
• Primary
Parkinsonism or
Parkinson's disease
•
•
dementia with
Parkinsonism
(G31.83)
•
•
•
•
•
•
•
certain conditions originating
in the perinatal period (P04P96)
certain infectious and
parasitic diseases (A00-B99)
complications of pregnancy,
childbirth and the
puerperium (O00-O9A)
congenital malformations,
deformations, and
chromosomal abnormalities
(Q00-Q99)
endocrine, nutritional and
metabolic diseases (E00-E88)
injury, poisoning and certain
other consequences of
external causes (S00-T88)
neoplasms (C00-D49)
symptoms, signs and
abnormal clinical and
laboratory findings, not
elsewhere classified (R00R94)
Parkinson’s Dx. Documentation Tips
• Type
– Idiopathic G20
– Primary G20
– Secondary G21.19
– Due to
•
•
•
•
Drugs G21.19
External agents G21.2
Treatment induced G21.19
Vascular G21.4
– With Dementia G31.83
• Without behavioral disturbance [F02.80]
• With behavioral disturbance [F02.81]
Carpal tunnel syndrome, unspecified upper limb
ICD-9 Code
ICD-10
Code
Description
Excludes1
Excludes2
354.0
G56.00
Carpal tunnel
syndrome,
unspecified upper
limb
•
N/A
current traumatic nerve
disorder - see nerve injury
by body region
There are more specific code choice selections below:
G56.01
Carpal tunnel syndrome, right upper limb
G56.02
Carpal tunnel syndrome, leftt upper limb
Carpal Tunnel Syndrome Documentation Tips
• Laterality
– Right
– Left
– Bilateral
Anesthesia of skin
ICD-9 Code
ICD-10 Code
Description
Excludes1
Excludes2
782.0
R20.0
Anesthesia of skin
•
• symptoms
relating to
breast
(N64.4N64.5)
•
782.0
R20.1
Hypoesthesia of skin
•
•
782.0
782.0
R20.2
R20.3
Paresthesia of skin
•
Applicable To:
•
Formication
•
Pins and needles
•
Tingling skin
•
•
Hyperesthesia
•
•
782.0
R20.8
Other disturbances of skin
sensation
•
•
782.0
R20.9
Unspecified disturbances of skin
sensation
•
•
dissociative anesthesia and sensory
loss (F44.6)
psychogenic disturbances (F45.8)
dissociative anesthesia and sensory
loss (F44.6)
psychogenic disturbances (F45.8)
dissociative anesthesia and sensory
loss (F44.6)
psychogenic disturbances (F45.8)
acroparesthesia (I73.8)
dissociative anesthesia and sensory
loss (F44.6)
psychogenic disturbances (F45.8)
dissociative anesthesia and sensory
loss (F44.6)
psychogenic disturbances (F45.8)
dissociative anesthesia and sensory
loss (F44.6)
psychogenic disturbances (F45.8)
Localized-related (focal)(partial) epilepsy syndromes with complex partial seizures, with intractable epilepsy
ICD-9 Code
ICD-10 Code
Description
Excludes1
Excludes2
345.41
G40.211
Localization-related
(focal)(partial) epilepsy
and epileptic
syndromes with
complex partial
seizures, intractable,
with status epilepticus
•
conversion disorder with
seizures (F44.5)
convulsions NOS (R56.9)
hippocampal sclerosis
(G93.81)
mesial temporal
sclerosis (G93.81)
post traumatic seizures
(R56.1)
seizure (convulsive) NOS
(R56.9)
seizure of newborn
(P90)
temporal sclerosis
(G93.81)
Todd's paralysis (G83.8)
N/A
conversion disorder with
seizures (F44.5)
convulsions NOS (R56.9)
hippocampal sclerosis
(G93.81)
mesial temporal
sclerosis (G93.81)
post traumatic seizures
(R56.1)
seizure (convulsive) NOS
(R56.9)
seizure of newborn
(P90)
temporal sclerosis
(G93.81)
Todd's paralysis (G83.8)
N/A
•
•
•
•
•
•
•
•
345.41
G40.219
Localization-related
(focal)(partial) epilepsy
and epileptic
syndromes with
complex partial
seizures, intractable,
without status
epilepticus
•
•
•
•
•
•
•
•
•
Localization-related (focal)(partial) epilepsy and epileptic syndromes, with complex partial seizures, without
mention of intractable epilepsy
ICD-9 Code
ICD-10 Code
Description
Excludes1
Excludes2
345.40
G40.201
Localization-related
(focal)(partial) epilepsy
and epileptic syndromes
with complex partial
seizures, not intractable,
with status epilepticus
•
conversion disorder with
seizures (F44.5)
convulsions NOS (R56.9)
hippocampal sclerosis
(G93.81)
mesial temporal
sclerosis (G93.81)
post traumatic seizures
(R56.1)
seizure (convulsive) NOS
(R56.9)
seizure of newborn
(P90)
temporal sclerosis
(G93.81)
Todd's paralysis (G83.8)
N/A
conversion disorder with
seizures (F44.5)
convulsions NOS (R56.9)
hippocampal sclerosis
(G93.81)
mesial temporal
sclerosis (G93.81)
post traumatic seizures
(R56.1)
seizure (convulsive) NOS
(R56.9)
seizure of newborn
(P90)
temporal sclerosis
(G93.81)
Todd's paralysis (G83.8)
N/A
•
•
•
•
•
•
•
•
345.40
G04.209
Localization-related
(focal)(partial) epilepsy
and epileptic syndromes
with complex partial
seizures, not intractable,
without status
epilepticus
•
•
•
•
•
•
•
•
•
Generalized convulsive epilepsy with intractable epilepsy
ICD-9 Code
ICD-10 Code
Description
Excludes1
Excludes2
345.10
G40.311
Generalized idiopathic
epilepsy and epileptic
syndromes, intractable,
with status epilepticus
•
conversion disorder with
seizures (F44.5)
convulsions NOS (R56.9)
hippocampal sclerosis
(G93.81)
mesial temporal
sclerosis (G93.81)
post traumatic seizures
(R56.1)
seizure (convulsive) NOS
(R56.9)
seizure of newborn
(P90)
temporal sclerosis
(G93.81)
Todd's paralysis (G83.8)
N/A
conversion disorder with
seizures (F44.5)
convulsions NOS (R56.9)
hippocampal sclerosis
(G93.81)
mesial temporal
sclerosis (G93.81)
post traumatic seizures
(R56.1)
seizure (convulsive) NOS
(R56.9)
seizure of newborn
(P90)
temporal sclerosis
(G93.81)
Todd's paralysis (G83.8)
N/A
•
•
•
•
•
•
•
•
345.10
G40.319
Generalized idiopathic
epilepsy and epileptic
syndromes, intractable,
without status
epilepticus
•
•
•
•
•
•
•
•
•
Generalized convulsive epilepsy without mention of intractable epilepsy
ICD-9 Code
ICD-10 Code
Description
Excludes1
Excludes2
345.10
G40.301
Generalized idiopathic
epilepsy and epileptic
syndromes, not
intractable, with status
epilepticus
•
conversion disorder with
seizures (F44.5)
convulsions NOS (R56.9)
hippocampal sclerosis
(G93.81)
mesial temporal
sclerosis (G93.81)
post traumatic seizures
(R56.1)
seizure (convulsive) NOS
(R56.9)
seizure of newborn
(P90)
temporal sclerosis
(G93.81)
Todd's paralysis (G83.8)
N/A
conversion disorder with
seizures (F44.5)
convulsions NOS (R56.9)
hippocampal sclerosis
(G93.81)
mesial temporal
sclerosis (G93.81)
post traumatic seizures
(R56.1)
seizure (convulsive) NOS
(R56.9)
seizure of newborn
(P90)
temporal sclerosis
(G93.81)
Todd's paralysis (G83.8)
N/A
•
•
•
•
•
•
•
•
345.10
G40.309
Generalized idiopathic
epilepsy and epileptic
syndromes, not
intractable, without
status epilepticus
•
•
•
•
•
•
•
•
•
Epilepsy Documentation Tips
• Status Epilepticus
–
With or without
• Intractability
–
–
Intractable
Not intractable
• Epilepsy Type
–
–
–
–
–
–
–
Absence syndrome
Due to external causes
Epileptic spasms
Generalized idiopathic
Juvenile myoclonic
Lennox-Gastaut
Partial idiopathic, localized onset
• Partial Seizure Type
–
–
•
With complex partial seizures
With simple partial seizures
Note: The following terms are to be considered equivalent to intractable:
pharmacoresistant (pharmacologically resistant), treatment resistant, refractory
(medically) and poorly controlled.
Idiopathic Progressive Polyneuropathy
ICD-9 Code
ICD-10 Code
Description
Excludes1
Excludes2
356.4
G60.3
Idiopathic
progressive
neuropathy
•
N/A
•
•
•
neuralgia NOS
(M79.2)
neuritis NOS
(M79.2)
peripheral
neuritis in
pregnancy
(O26.82-)
radiculitis NOS
(M54.10)
Thoracic or lumbosacral neuritis or radiculitis, unspecified
ICD-9 Code
ICD-10 Code
Description
Excludes1
Excludes2
724.4
M54.14
Radiculopathy,
thoracic region
•
•
•
•
current injury - see
injury of spine by body
region
discitis NOS (M46.4-)
•
•
•
•
•
•
•
•
arthropathic psoriasis (L40.5-)
certain conditions originating in the perinatal
period (P04-P96)
certain infectious and parasitic diseases (A00-B99)
compartment syndrome (traumatic) (T79.A-)
complications of pregnancy, childbirth and the
puerperium (O00-O9A)
congenital malformations, deformations, and
chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00E88)
injury, poisoning and certain other consequences
of external causes (S00-T88)
neoplasms (C00-D49)
symptoms, signs and abnormal clinical and
laboratory findings, not elsewhere classified (R00R94)
There are more specific code choice selections below:
M54.15
Radiculopathy, thoracolumbar region
M54.16
Radiculopathy, lumbar region
M54.17
Radiculopathy, lumbosacral region
M51.14
Intervertebral disc disorders with radiculopathy, thoracic region
M51.15
Intervertebral disc disorders with radiculopathy, thoracolumbar region
M51.16
Intervertebral disc disorders with radiculopathy, lumbar region
M51.17
Intervertebral disc disorders with radiculopathy, lumbosacral region
Thoracic or Lumbosacral Neuritis or Radiculitis
Documentation Tips
• Spinal Region
–
–
–
–
Thoracic
Thoracolumbar
Lumbar
Lumbosacral
Respiratory Abnormality other
ICD-9 Code
ICD-10 Code
Description
Excludes1
Excludes2
786.09
R06.89
Other abnormalities
of breathing
•
N/A
•
•
•
•
•
There are additional code choice selections:
R06.00
Dyspnea, unspecified
R06.01
Orthopnea
R06.02
Shortness of breath
R06.09
Other forms of dyspnea
R06.1
Stridor
R06.2
Wheezing
R06.3
Periodic breathing
R06.4
Hyperventilation
R06.5
Mouth breathing
R06.6
Hiccough
R06.7
Sneezing
R06.81
Apnea, not elsewhere classified
R06.82
Tachypnea, not elsewhere classified
R06.83
Snoring
acute respiratory distress
syndrome (J80)
respiratory arrest (R09.2)
respiratory arrest of newborn
(P28.81)
respiratory distress syndrome of
newborn (P22.-)
respiratory failure (J96.-)
respiratory failure of newborn
(P28.5)
Documentation Tips
• Use of symptom codes
– Codes that describe symptoms and signs are acceptable for reporting purposes when a
related definitive diagnosis has not been established (confirmed) by the provider.
• Use of a symptom code with a definitive diagnosis code
– Codes for signs and symptoms may be reported in addition to a related definitive
diagnosis when the sign or symptom is not routinely associated with that diagnosis, such
as the various signs and symptoms associated with complex syndromes. The definitive
diagnosis code should be sequenced before the symptom code.
– Signs or symptoms that are associated routinely with a disease process should not be
assigned as additional codes, unless otherwise instructed by the classification.
• Combination codes that include symptoms
– ICD-10-CM contains a number of combination codes that identify both the definitive
diagnosis and common symptoms of that diagnosis. When using one of these
combination codes, an additional code should not be assigned for the symptom.
Amyotrophic Lateral Sclerosis
ICD-9 Code
ICD-10 Code
Description
Excludes1
Excludes2
335.20
G12.21
Amyotrophic
lateral sclerosis
• certain conditions
originating in the
perinatal period (P04P96)
• certain infectious and
parasitic diseases
(A00-B99)
• complications of
pregnancy, childbirth
and the puerperium
(O00-O9A)
• congenital
malformations,
deformations, and
chromosomal
abnormalities (Q00Q99)
• endocrine, nutritional
and metabolic
diseases (E00-E88)
• injury, poisoning and
certain other
consequences of
external causes (S00T88)
• neoplasms (C00-D49)
• symptoms, signs and
abnormal clinical and
laboratory findings,
not elsewhere
classified (R00-R94)
N/A
Lesion of Ulnar Nerve
ICD-9 Code
ICD-10 Code
Description
Excludes1
Excludes2
354.2
G56.20
Lesion of ulnar nerve,
unspecified upper
limb
•
•
•
•
•
•
current traumatic
nerve, nerve root
and plexus disorders
- see Injury, nerve by
body region
neuralgia NOS
(M79.2)
neuritis NOS
(M79.2)
peripheral neuritis
in pregnancy
(O26.82-)
radiculitis NOS
•
•
•
•
•
•
•
There are additional code choices:
G56.21
Lesion of ulnar nerve, right upper limb
G56.22
Lesion of ulnar nerve, left upper limb
certain conditions originating in
the perinatal period (P04-P96)
certain infectious and parasitic
diseases (A00-B99)
complications of pregnancy,
childbirth and the puerperium
(O00-O9A)
congenital malformations,
deformations, and chromosomal
abnormalities (Q00-Q99)
endocrine, nutritional and
metabolic diseases (E00-E88)
injury, poisoning and certain other
consequences of external causes
(S00-T88)
neoplasms (C00-D49)
symptoms, signs and abnormal
clinical and laboratory findings, not
elsewhere classified (R00-R94)
Lesion of Ulnar Nerve Documentation Tips
• Laterality
– Left
– Right
– Bilateral
Essential and other specified forms of tremor
ICD-9 Code
ICD-10 Code
Description
Excludes1
Excludes2
333.1
G25.0
Essential tremor
•
•
Applicable to:
• Familial tremor
333.1
G25.1
Drug-induced tremor
Applicable To:
• Familial tremor
Use additional code for
adverse effect, if applicable,
to identify drug (T36-T50 with
fifth or sixth character 5)
333.1
G25.2
Other specified forms of
tremor
Applicable to:
• Intention tremor
tremor NOS
(R25.1)
Sleep related
movement disorders
(G47.6-)
Syncope and collapse
ICD-9 Code
ICD-10 Code
Description
Excludes1
Excludes2
780.2
R55
Syncope and
collapse
•
•
•
Applicable To:
• Blackout
• Fainting
• Vasovagal attack
•
•
•
•
•
•
•
•
•
•
•
cardiogenic shock (R57.0)
carotid sinus syncope
(G90.01)
heat syncope (T67.1)
neurocirculatory asthenia
(F45.8)
neurogenic orthostatic
hypotension (G90.3)
orthostatic hypotension
(I95.1)
postprocedural shock
(T81.1-)
psychogenic syncope
(F48.8)
shock NOS (R57.9)
shock complicating or
following abortion or
ectopic or molar pregnancy
(O00-O07, O08.3)
shock complicating or
following labor and delivery
(O75.1)
Stokes-Adams attack (I45.9)
unconsciousness NOS
(R40.2-)
•
•
•
abnormal findings on
antenatal screening
of mother (O28.-)
certain conditions
originating in the
perinatal period (P04P96)
signs and symptoms
classified in the body
system chapters
signs and symptoms
of breast (N63,
N64.5)
Syncope Documentation Tips
• Type
– Carotid sinus syncope
– Heat syncope
• Initial encounter
• Subsequent encounter
• sequela
– Psychogenic syncope
– Stokes-Adams syncope
– Vasovagal syncope
Documentation – Start Now
All Conditions treated or assessed must be documented in the medical
record. In addition to the documentation tips reviewed, below are more
areas to document that will ensure proper ICD-10-CM code selection.
•
•
Site specificity
Document notation of qualifiers
–
–
–
–
–
•
•
Indicate acute or chronic
Indicate underlying or external cause factors
–
–
–
–
•
Exacerbation
Manifestations
Relapse
Status
Stages
Medication
Smoke
Accidents
Mechanical failure
Laterality
– Bilateral
– Right
– Left
Documentation – Start Now
• Episode of Care for injuries, poisoning, external
causes and other conditions
– Initial Encounter
• Use while the patient is receiving active treatment of the condition
– Active treatment includes surgical treatment, an emergency
encounter, and evaluation and treatment by a new physician
– Subsequent Encounter
• Used on encounter after the patient has received active treatment
of the condition and is receiving routine care for the condition
during the healing or recovery phase.
– Medication adjustments, aftercare, device adjustments, cast change
– Sequela
• Used for complications or conditions that arise as a direct result of
a condition, late effect
Documentation – Start Now
• Combination codes that capture
– Etiology and manifestation
– Related conditions
– Disease, injury or other medical condition and
complications
– Disease or other medical conditions and common signs or
symptoms
• Add ICD-10 Codes to patient Problem List
Official Guidelines for Coding and Reporting
Underdosing
Underdosing refers to taking less of a medication than is prescribed by a provider or a
manufacturer’s instruction. For underdosing, assign the code from categories T36-T50
(fifth or sixth character “6”).
Codes for underdosing should never be assigned as principal or first-listed codes. If a
patient has a relapse or exacerbation of the medical condition for which the drug is
prescribed because of the reduction in dose, then the medical condition itself should
be coded.
Noncompliance (Z91.12-, Z91.13-) or complication of care (Y63.6-Y63.9) codes are to be
used with an underdosing code to indicate intent, if known.
OGCR Section 1.C.19.e.5.c
Questions
codingresource@g1hs.com
Centers for Disease Control and Prevention (ICD-10-CM)
http://www.cdc.gov/nchs/icd/icd10cm.htm