ICD-9-CM diagnosis code (retired)
766.22 — Prolonged gestation of infant
ICD-9-CM was replaced by ICD-10 on October 1, 2015. These are the ICD-10-CM equivalents from the CMS General Equivalence Mappings.
About ICD-9-CM 766.22
766.22 is an ICD-9-CM diagnosis code for prolonged gestation of infant. ICD-9-CM was retired for U.S. claims on October 1, 2015, when ICD-10-CM took over.
The CMS General Equivalence Mappings translate it to one ICD-10-CM code, P08.22 (Prolonged gestation of newborn). The match is exact.
ICD-10-CM equivalents
- P08.22Prolonged gestation of newbornexact match
Common questions about 766.22
What is the ICD-10 code for ICD-9 766.22?
- The GEMs map 766.22 to ICD-10-CM P08.22.
GEMs are a translation aid, not a substitute for coding from the record. The 2027 ICD-10 code set has changed since the last GEMs release in 2018. Page updated September 29, 2026.