Is P91 a billable ICD-10-CM code?

No. P91 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does P91 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).

P91

P91 — Other disturbances of cerebral status of newborn

Non-billable headerICD-10-CM

P91 is a non-billable header ICD-10-CM code for other disturbances of cerebral status of newborn. It cannot be billed on its own: choose one of the more specific child codes below.

Other codes that can never be billed with P91

These codes carry an Excludes1 note pointing at P91. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading P91 alone.

P84Other problems with newborn
P91.0Neonatal cerebral ischemia
P91.6Hypoxic ischemic encephalopathy [HIE]
R40Somnolence, stupor and coma
R68.1Nonspecific symptoms peculiar to infancy
G45Transient cerebral ischemic attacks and related syndromes
G93.0Cerebral cysts
I63Cerebral infarction

Risk adjustment

P91 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead P91

9 child codes. Green means billable.

Questions about P91

Is P91 a billable ICD-10-CM code?: No. P91 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does P91 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).