ICD-10-CM 2027
ICD-10 code for posterior fossa nontraumatic hemorrhage
Other nontraumatic intracerebral hemorrhage
From the official ICD-10-CM alphabetic index entry “Hemorrhage, hemorrhagic (concealed) › posterior fossa (nontraumatic)”. Page updated September 29, 2026.
About coding posterior fossa nontraumatic hemorrhage
The ICD-10-CM code for posterior fossa nontraumatic hemorrhage is I61.8 (Other nontraumatic intracerebral hemorrhage). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on I61.8.
Within I61, choose I61.8 (Other nontraumatic intracerebral hemorrhage) only when documentation doesn't support a more specific option: in hemisphere, subcortical (I61.0), in hemisphere, cortical (I61.1), in hemisphere, unspecified (I61.2), in brain stem (I61.3), in cerebellum (I61.4), intraventricular (I61.5), multiple localized (I61.6) and unspecified (I61.9).
Use an additional code, if known, to indicate National Institutes of Health Stroke Scale (NIHSS) score (R29.7-).
As a secondary diagnosis it is an MCC (major complication or comorbidity), which can move an inpatient stay into the highest-paying "with MCC" MS-DRG of its family, unless the principal diagnosis excludes it.
More specific posterior fossa nontraumatic hemorrhage codes (official index)
- newborn P52.6 — Cerebellar (nontraumatic) and posterior fossa hemorrhage of newborn
Common questions about posterior fossa nontraumatic hemorrhage ICD-10 codes
What is the ICD-10 code for posterior fossa nontraumatic hemorrhage?
- I61.8 — Other nontraumatic intracerebral hemorrhage. More specific codes apply when the documentation supports them: P52.6.
What is the ICD-10 code for newborn posterior fossa nontraumatic hemorrhage?
- P52.6 — Cerebellar (nontraumatic) and posterior fossa hemorrhage of newborn.
Is I61.8 billable?
- Yes. I61.8 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can I61.8 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict I61.8 as a principal diagnosis.
Is I61.8 a CC or MCC?
- I61.8 is an MCC (major complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.