Is P91.61 a billable ICD-10-CM code?

Yes. P91.61 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does P91.61 sit in the tabular list?

Certain conditions originating in the perinatal period (P00-P96), in the block Other disorders originating in the perinatal period (P90-P96).

What cannot be coded together with P91.61?

P91.61 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above P91.61 (P91.6) and apply to it just the same.

P91.61

P91.61 — Mild hypoxic ischemic encephalopathy [HIE]

Billable / specific codeICD-10-CM

P91.61 is a billable, specific ICD-10-CM code for mild hypoxic ischemic encephalopathy [hie]. It is valid for submission on a claim.

Excludes1 inherited from the categories above P91.61

These are not written on P91.61, but they bind it: a note on a category applies to every code beneath it. Billing P91.61 with anything listed here is a denial.

Written on P91.6 — Hypoxic ischemic encephalopathy [HIE]

Neonatal cerebral depression (P91.4)
Neonatal cerebral irritability (P91.3)
Neonatal coma (P91.5)

Risk adjustment

P91.61 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

HCC 202 Coma, Brain Compression/Anoxic Damage0.543 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.

Medicare coverage

P91.61 is named in 1 Medicare coverage policy — 1 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A57204Billing and Coding: MRI and CT Scans of the Head and Neck

How P91.61 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to P91.61.

Encephalopathy›hypoxic ischemic›mild
Newborn›affected by›hypoxic ischemic encephalopathy [HIE]›mild

Code history

P91.61 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share P91.6. If P91.61 is not quite right, the correct code is usually one of these.

Questions about P91.61

Is P91.61 a billable ICD-10-CM code?: Yes. P91.61 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does P91.61 sit in the tabular list?: Certain conditions originating in the perinatal period (P00-P96), in the block Other disorders originating in the perinatal period (P90-P96).
What cannot be coded together with P91.61?: P91.61 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above P91.61 (P91.6) and apply to it just the same.