I63.9
Cerebral infarction, unspecified
Billable FY2026 2025-10-01 → 2026-09-30
This is the unspecified option. 8 more
specific codes sit alongside it. Worth
checking whether the documentation supports one of them.
Exclusions 15 never code together
I63code
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 12
I63code
Includes
- occlusion and stenosis of cerebral and precerebral arteries, resulting in cerebral infarction
I63.9code
Inclusion terms
- Stroke NOS
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 6
Alongside this code 8 same parent — I63
I63.0 Cerebral infarction due to thrombosis of precerb arteries category I63.1 Cerebral infarction due to embolism of precerebral arteries category I63.2 Cerebral infrc due to unsp occls or stenosis of precerb art category I63.3 Cerebral infarction due to thrombosis of cerebral arteries category I63.4 Cerebral infarction due to embolism of cerebral arteries category I63.5 Cerebral infrc due to unsp occls or stenosis of cerebral art category I63.6 Cerebral infrc due to cerebral venous thombos, nonpyogenic I63.8 Other cerebral infarction category
Medications 1
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.