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ICD-10-CM 2027

ICD-10 code for Postmaturity

Choose a code from the options below based on the documentation.

From the official ICD-10-CM alphabetic index entry “Postmaturity, postmature (over 42 weeks)”. Page updated September 29, 2026.

About coding Postmaturity

The official ICD-10-CM index doesn't give a single default code for postmaturity; the code depends on the details below.

More specific Postmaturity codes (official index)

  • maternal (over 42 weeks gestation) O48.1 — Prolonged pregnancy
  • newborn P08.22 — Prolonged gestation of newborn

Common questions about Postmaturity ICD-10 codes

What is the ICD-10 code for maternal postmaturity?

O48.1 — Prolonged pregnancy.

What is the ICD-10 code for newborn postmaturity?

P08.22 — Prolonged gestation of newborn.