O90 – Complications of the puerperium, not elsewhere classified

ICD-10-CM 2027 diagnosis code · Complications predominantly related to the puerperium

Non-billable header

ICD-10-CM code O90

Code: O90 (claims format: O90)
Description: Complications of the puerperium, not elsewhere classified
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 15. Pregnancy, childbirth and the puerperium (O00-O9A)
Block: O85-O92 Complications predominantly related to the puerperium

Billable codes under O90

O90 is a header code and cannot be used on claims. Choose the most specific code:

O90.0 – Disruption of cesarean delivery woundBillable
O90.1 – Disruption of perineal obstetric woundBillable
O90.2 – Hematoma of obstetric woundBillable
O90.3 – Peripartum cardiomyopathyBillable
O90.4 – Postpartum acute kidney failureHeader (more codes below)
O90.5 – Postpartum thyroiditisBillable
O90.6 – Postpartum mood disturbanceBillable
O90.8 – Other complications of the puerperium, not elsewhere classifiedHeader (more codes below)
O90.9 – Complication of the puerperium, unspecifiedBillable

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Block O85-O92

Excludes2 (not included here):

mental and behavioral disorders associated with the puerperium (F53.-)
obstetrical tetanus (A34)
puerperal osteomalacia (M83.0)

Frequently asked questions

What is ICD-10 code O90?

O90 is the ICD-10-CM code for complications of the puerperium, not elsewhere classified, in the block O85-O92 (Complications predominantly related to the puerperium).

Is O90 a billable code?

No. O90 is a header code with more specific child codes; report one of the billable codes listed above.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.