I63.50

Cerebral infarction due to unspecified occlusion or stenosis of unspecified cerebral artery

Billable FY2026 2025-10-01 → 2026-09-30

This is the unspecified option. 5 more specific codes sit alongside it. Worth checking whether the documentation supports one of them.

Exclusions 14 never code together

I63code

Excludes1

neonatal cerebral infarction (P91.82-)P91.82-

Excludes2

chronic, without residual deficits (sequelae) (Z86.73)Z86.73
sequelae of cerebral infarction (I69.3-)I69.3-

I60-I69block

Excludes1

traumatic intracranial hemorrhage (S06.-)S06.-

I00-I99chapter

Excludes2

certain conditions originating in the perinatal period (P04-P96)P04-P96
certain infectious and parasitic diseases (A00-B99)A00-B99
complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
neoplasms (C00-D49)C00-D49
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
systemic connective tissue disorders (M30-M36)M30-M36
transient cerebral ischemic attacks and related syndromes (G45.-)G45.-

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes 11

I63code

Includes

occlusion and stenosis of cerebral and precerebral arteries, resulting in cerebral infarction

Use additional code

code, if applicable, to identify status post administration of tPA (rtPA) in a different facility within the last 24 hours prior to admission to current facility (Z92.82)Z92.82
code, if known, to indicate National Institutes of Health Stroke Scale (NIHSS) score (R29.7-)R29.7-

I60-I69block

Use additional code

code to identify presence of:
alcohol abuse and dependence (F10.-)F10.-
exposure to environmental tobacco smoke (Z77.22)Z77.22
history of tobacco dependence (Z87.891)Z87.891
hypertension (I10-I1A)I10-I1A
occupational exposure to environmental tobacco smoke (Z57.31)Z57.31
tobacco dependence (F17.-)F17.-
tobacco use (Z72.0)Z72.0

Index entries leading here 3

Occlusion, occluded
- artery I70.9
  - brain or cerebral I66.9
    - with infarction (due to) I63.5
  - cerebral I66.9
    - with infarction I63.50
- cerebrovascular — see also Occlusion, artery, cerebral
  - with infarction I63.5
Softening
- brain (necrotic) (progressive) G93.89
  - occlusive I63.5
Infarct, infarction
- cerebral (acute) I63.9
  - due to
    - occlusion NEC
      - cerebral arteries I63.5
    - stenosis NEC
      - cerebral arteries I63.5

Alongside this code 5 same parent — I63.5

I63.51 Cereb infrc due to unsp occls or stenos of middle cereb art category I63.52 Cereb infrc due to unsp occls or stenos of ant cereb artery category I63.53 Cereb infrc due to unsp occls or stenos of post cereb artery category I63.54 Cereb infrc due to unsp occls or stenosis of cereblr artery category I63.59 Cereb infrc due to unsp occls or stenosis of cerebral artery

Medications 1

23 Cerebral Infarction drugs

MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.

Additional references

AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

CMS22HCC100 CMS28HCC249 ESRD21HCC100 ESRD24HCC100

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable: yes
Code set: FY2026
Parent: I63.5
Block: I60-I69
Siblings: 5

Present FY2024–FY2027.