Is P77 a billable ICD-10-CM code?

No. P77 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does P77 sit in the tabular list?

Certain conditions originating in the perinatal period (P00-P96), in the block Digestive system disorders of newborn (P76-P78).

P77

P77 — Necrotizing enterocolitis of newborn

Non-billable headerICD-10-CM

P77 is a non-billable header ICD-10-CM code for necrotizing enterocolitis 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 P77

These codes carry an Excludes1 note pointing at P77. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading P77 alone.

K55Vascular disorders of intestine
K55.3Necrotizing enterocolitis

Risk adjustment

P77 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 P77

4 child codes. Green means billable.

Questions about P77

Is P77 a billable ICD-10-CM code?: No. P77 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does P77 sit in the tabular list?: Certain conditions originating in the perinatal period (P00-P96), in the block Digestive system disorders of newborn (P76-P78).