ICD-10-CM · Chapter 15 · O00–O9A

O24.31

Unspecified pre-existing diabetes mellitus in pregnancy

Pregnancy, childbirth and the puerperium

Heads up:this is a parent code. It's typically not directly billable — you need to drill down to a more specific child code (one with additional digits) to use on a claim.

Quick facts

Code: O24.31
Type: Category / header (non-billable)
ICD-10-CM chapter: Chapter 15 — Pregnancy, childbirth and the puerperium
Category: O24 — Diabetes mellitus in pregnancy, childbirth, and the puerperium
Specificity: 5 characters

How coders use this code

ICD-10-CM O24.31 is a category (header) for unspecified pre-existing diabetes mellitus in pregnancy. It is generally not reported directly on a claim — coders drill down to a more specific child code (one with additional characters) that matches the documentation. Use the related codes below to find the billable code that fits, and verify against the annual NCHS/CMS guidelines.

Related codes in O24

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