ICD-10 P37
Non-Billable HeaderOther congenital infectious and parasitic diseases
About ICD-10-CM P37
ICD-10-CM code P37 represents Other congenital infectious and parasitic diseases. This is a non-billable header code in the Perinatal Period chapter (block P37). The 2026 edition of ICD-10-CM P37 became effective on October 1, 2025. Non-billable codes cannot be used as a primary or secondary diagnosis on a claim, use a more specific child code instead.
Type 2 Excludes
Not included here, the excluded code is not part of P37, but a patient may have both conditions at the same time. Both codes may be coded together when applicable.
- 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)
Medicare LCD Coverage for P37
Local Coverage Determinations (LCDs) from CMS MACs that list P37 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing P37.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but P37 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with P37
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Codes Adjacent To P37
Other codes in section P35-P39 (Infections specific to the perinatal period).
ICD-10 P37, Billing FAQ
Is ICD-10 code P37 billable? +
No, P37 is a non-billable header code. Use a more specific child code from block P37 when submitting claims.
What codes are Type 2 Excludes for P37? +
Type 2 Excludes (may be coded together when both conditions exist): congenital syphilis (A50.-); infectious neonatal diarrhea (A00-A09); necrotizing enterocolitis in newborn (P77.-)
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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