Is P37 a billable ICD-10-CM code?

No. P37 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does P37 sit in the tabular list?

Certain conditions originating in the perinatal period (P00-P96), in the block Infections specific to the perinatal period (P35-P39).

P37

P37 — Other congenital infectious and parasitic diseases

Non-billable headerICD-10-CM

P37 is a non-billable header ICD-10-CM code for other congenital infectious and parasitic diseases. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes2 — not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

congenital syphilis (A50.-)
infectious neonatal diarrhea (A00-A09)
necrotizing enterocolitis in newborn (P77.-)
noninfectious neonatal diarrhea (P78.3)
ophthalmia neonatorum due to gonococcus (A54.31)
tetanus neonatorum (A33)

Other codes that can never be billed with P37

These codes carry an Excludes1 note pointing at P37. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading P37 alone.

A32Listeriosis
B37Candidiasis
B58Toxoplasmosis
Q03Congenital hydrocephalus
G91.4Hydrocephalus in diseases classified elsewhere

Risk adjustment

P37 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 P37

8 child codes. Green means billable.

Questions about P37

Is P37 a billable ICD-10-CM code?: No. P37 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does P37 sit in the tabular list?: Certain conditions originating in the perinatal period (P00-P96), in the block Infections specific to the perinatal period (P35-P39).