ICD-10-CM 2027 diagnosis code

O99.32Drug use complicating pregnancy, childbirth, and the puerperium

Not billable — use a more specific code

O99.32 is a header code, so it can't be reported by itself. Choose one of the 6 more specific codes beneath it.Short description: Drug use comp pregnancy, childbirth, and the puerperium

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About O99.32

O99.32 is the ICD-10-CM diagnosis code for drug use complicating pregnancy, childbirth, and the puerperium. It belongs to category O99 (other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium), block O94-O9A (other obstetric conditions, not elsewhere classified) and chapter 15 (pregnancy, childbirth and the puerperium). It is a header code, so it can't be reported by itself; one of its 6 subcodes must be used instead.

Within O99.3 (mental disorders and diseases of the nervous system complicating pregnancy, childbirth and the puerperium), O99.32 is specifically for drug use complicating pregnancy, childbirth, and the puerperium. Related codes cover alcohol use complicating pregnancy, childbirth, and the puerperium (O99.31), tobacco use disorder complicating pregnancy, childbirth, and the puerperium (O99.33), other mental disorders complicating pregnancy, childbirth, and the puerperium (O99.34) and diseases of the nervous system complicating pregnancy, childbirth, and the puerperium (O99.35).

To report this condition, pick the subcode that matches the documentation: O99.320 (trimester), O99.321 (trimester), O99.322 (trimester), O99.323 (trimester), O99.324 (childbirth) and O99.325 (puerperium).

Use an additional code(s) from F11-F16 and F18-F19 to identify manifestations of the drug use. Use an additional code to identify specific condition.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under O99.32

Coding notes

Use additional codeAdd a secondary code to fully describe the condition

code(s) from F11-F16 and F18-F19 to identify manifestations of the drug use

Notes that apply from higher levels

Instructions written at a parent level also apply to O99.32.

› From O99 Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium

Includes

conditions which complicate the pregnant state, are aggravated by the pregnancy or are a main reason for obstetric care

Excludes2

when the reason for maternal care is that the condition is known or suspected to have affected the fetus (O35-O36)

Use additional code

code to identify specific condition

Broader instructions also apply from Chapter 15: Pregnancy, childbirth and the puerperium.

Alphabetic index entries

2 entries

Terms in the official ICD-10-CM index that lead to O99.32.

Codes whose notes reference O99.32

Z79Excludes2

Code history

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2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about O99.32

Is O99.32 billable?: No. O99.32 is a header code. Report one of its more specific subcodes instead.