I63.511
Cerebral infarction due to unspecified occlusion or stenosis of right middle cerebral artery
HCC risk adjustment mapping
CMS-HCC V28
Ischemic or Unspecified Stroke
CMS-HCC ESRD V24
Ischemic or Unspecified Stroke
Coding notes
Excludes 1 never coded together · Excludes 2 may co-exist
traumatic intracranial hemorrhage (S06.-)
code to identify presence of: alcohol abuse and dependence (F10.-) exposure to environmental tobacco smoke (Z77.22) history of tobacco dependence (Z87.891) hypertension (I10-I1A) occupational exposure to environmental tobacco smoke (Z57.31) tobacco dependence (F17.-) tobacco use (Z72.0)
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) systemic connective tissue disorders (M30-M36) transient cerebral ischemic attacks and related syndromes (G45.-)
Official Guidelines for I63.511
FY 2026 ›Sections that reference I63.511
- I.C.9.a.4)Hypertensive Cerebrovascular Disease
For hypertensive cerebrovascular disease, first assign the appropriate code from categories I60-I69, followed by the appropriate hypertension code.
- I.C.9.d.1)Category I69, Sequelae of Cerebrovascular disease
Category I69 is used to indicate conditions classifiable to categories I60- I67 as the causes of sequela (neurologic deficits), themselves classified elsewhere. …
- I.C.9.d.2)Codes from category I69 with codes from I60-I67
Codes from category I69 may be assigned on a health care record with codes from I60-I67, if the patient has a current cerebrovascular disease and deficits from an old cerebrovascular disease.
- I.C.18.iNIHSS Stroke ScaleChapter 18
The NIH stroke scale (NIHSS) codes (R29.7- -) can be used in conjunction with acute stroke codes (I60-I63) to identify the patient's neurological status and the severity of the stroke. …
Sections whose FY 2026 text names I63.511, its I63 category, or a range containing it — the chapter guidance above is the authoritative source.