2027 ICD-10-CM Diagnosis Code I61.6Nontraumatic intracerebral hemorrhage, multiple localized
ICD-10-CM Codes›I00–I99›I60-I69›I61
- Billable — Valid for Submission
- MCC — Major Complication or Comorbidity
- Risk Adjusts — HCC 248
- Chronic Condition
I61.6 is a billable ICD-10-CM diagnosis code for nontraumatic intracerebral hemorrhage, multiple localized. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 20 through 24, 64 through 66, 791, 793. As a secondary diagnosis, it counts as a major complication or comorbidity (MCC) and places an inpatient stay in the highest severity level of its MS-DRG family. It does not count, however, when the principal diagnosis is one of 306 closely related codes. Coders also document this condition as intracerebellar and posterior fossa hemorrhage. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Acute hemorrhagic cerebrovascular disease.
For Medicare Advantage risk adjustment, I61.6 maps to CMS-HCC Category 248 (Intracranial Hemorrhage) under the V28 model, adding a risk factor of about 0.239 for a community, non-dual, aged beneficiary in payment year 2027.
Code Identity
Code Classification
Medicare Risk Adjustment (HCC)Billing
I61.6 maps to a payment category in the CMS-HCC model used to risk-adjust Medicare Advantage payments. Weights are the published community factors for payment year 2027.
Source: CMS Payment Year 2027 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Intracerebellar and posterior fossa hemorrhage
- Intracerebral hemorrhage, multiple localized
- Intraparenchymal hematoma of brain
- Intraparenchymal hemorrhage of brain
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to I61.6: its own notes plus those printed at I61, block I60-I69, and Chapter 9. A note printed at a category, block or chapter applies to every code under it.
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
- traumatic intracranial hemorrhage (S06.-)
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- sequelae of intracerebral hemorrhage (I69.1-)
- 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.-)
Use Additional Code
Add a second code, after this one, to fully describe the condition.
- code, if known, to indicate National Institutes of Health Stroke Scale (NIHSS) score (R29.7-)
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name I61.6, its category, or a range that includes it.
Code First 1
These codes say to code first a condition named in the note, and I61.6 is one of the conditions named.
Code Also 2
These codes say I61.6 may also be needed to fully describe the condition. The note gives no sequencing direction.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Hemorrhagic Stroke
A stroke happens when there is a loss of blood flow to part of the brain. Your brain cells cannot get the oxygen and nutrients they need from blood, and they start to die within a few minutes. This can cause lasting brain damage, long-term disability, or even death.
The full article covers:
- What is a hemorrhagic stroke?
- What are the types of hemorrhagic stroke?
- What causes hemorrhagic stroke?
- What are the symptoms of a hemorrhagic stroke?
- How is a hemorrhagic stroke diagnosed?
- How is hemorrhagic stroke treated?
- Can a hemorrhagic stroke be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert I61.6 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About I61.6Overview
What is the ICD-10 code for nontraumatic intracerebral hemorrhage, multiple localized?
The ICD-10-CM code for nontraumatic intracerebral hemorrhage, multiple localized is I61.6 (sometimes written as I616). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is I61.6 (Nontraumatic intracerebral hemorrhage) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report nontraumatic intracerebral hemorrhage, multiple localized on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does I61.6 group to?
When nontraumatic intracerebral hemorrhage, multiple localized is the principal diagnosis on an inpatient stay, it groups to MS-DRG 793, 791, 24, 64, 22, 23, 65, 21, 20, 66, with relative weights from 0.6770 to 7.9594 depending on complications. Higher weights mean higher Medicare reimbursement.
Is I61.6 a CC or MCC?
CMS lists I61.6 as an MCC (major complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it places the inpatient stay in the highest-weighted DRG of its severity family. It does not count when the principal diagnosis is one of the 306 closely related codes in its exclusion list.
Can I61.6 be reported with a code from S06?
Not as a rule. The Excludes1 note at block I60-I69, which applies to I61.6, lists "traumatic intracranial hemorrhage (S06.-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
What HCC is I61.6?
I61.6 (nontraumatic intracerebral hemorrhage, multiple localized) maps to CMS-HCC Category 248 (Intracranial Hemorrhage), commonly written as HCC 248, in the CMS-HCC V28 model used for Medicare Advantage risk adjustment in payment year 2027. It mapped to HCC 99 under the retired V24 model. It also maps in the PACE (CMS-HCC V22), ESRD (V21), and ESRD (V24) models. It does not map to any RxHCC in the Part D prescription drug model.
Does I61.6 risk-adjust for Medicare Advantage payment?
Yes. When documented and reported on a Medicare Advantage encounter, I61.6 adds a risk adjustment factor of about 0.239 to the beneficiary's RAF score for a community, non-dual, aged enrollee (published V28 weights range from 0.081 to 0.377 depending on the payment segment). HCC 248 sits at the top of its hierarchy, so no other condition category supersedes it. See the full factor table on the HCC 248 category page.
