ICD-10-CM 2027
ICD-10 code for prolonged gestation newborn
From the official ICD-10-CM alphabetic index entry “Newborn (infant) (liveborn) (singleton) › prolonged gestation (over 42 completed weeks)”. Page updated September 29, 2026.
About coding prolonged gestation newborn
The ICD-10-CM code for prolonged gestation newborn is P08.22 (Prolonged gestation of newborn).
Within P08.2 (late newborn, not heavy for gestational age), P08.22 is specifically for prolonged gestation of newborn. Related codes cover Post-term newborn (P08.21).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 795 (Normal Newborn, relative weight 0.2022), in MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about prolonged gestation newborn ICD-10 codes
What is the ICD-10 code for prolonged gestation newborn?
- P08.22 — Prolonged gestation of newborn.
Is P08.22 billable?
- Yes. P08.22 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can P08.22 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict P08.22 as a principal diagnosis.
Is P08.22 a CC or MCC?
- No. P08.22 is neither a CC nor an MCC under MS-DRG v44.0.