O90.3 Peripartum cardiomyopathy

Billable ICD-10-CM code, FY2026. Acts as a Major Complication or Comorbidity (MCC) as a secondary diagnosis.

Applicable to

• Conditions in I42.- arising during pregnancy and the puerperium

Excludes1 (never code together)

• pre-existing heart disease complicating pregnancy and the puerperium (O99.4-)

MS-DRG index

Defines the logic of DRG(s) 769 in MDC 14.

Approximate ICD-9-CM (GEMs)

• 674.52 Peripartum cardiomyopathy, delivered, with mention of postpartum condition (approximate)
• 674.54 Peripartum cardiomyopathy, postpartum condition or complication (approximate)

Medicare Code Edits (MCE v43.1 (April 2026))

• Maternity diagnoses (age 9 through 64): Age conflict edit. These diagnoses are clinically expected only in patients age 9 through 64.

Code annotations containing back-references to O90.3

Back-references to O90.3

• Type 2 Excludes: I42 Cardiomyopathy ("peripartum cardiomyopathy (O90.3)")
• Type 1 Excludes: O99.4 Diseases of the circulatory system complicating pregnancy, childbirth and the puerperium ("peripartum cardiomyopathy (O90.3)")

Diagnosis Index entries for O90.3

• Cardiomyopathy (familial) (idiopathic) › peripartum
• Cardiomyopathy (familial) (idiopathic) › postpartum
• Failure, failed › heart (acute) (senile) (sudden) › peripartum
• Peripartum › cardiomyopathy
• Puerperal, puerperium (complicated by, complications) › cardiomyopathy

Nearby codes

• O90 Complications of the puerperium, not elsewhere classified
• O90.0 Disruption of cesarean delivery wound
• O90.1 Disruption of perineal obstetric wound
• O90.2 Hematoma of obstetric wound
• O90.3 Peripartum cardiomyopathy (this code)
• O90.4 Postpartum acute kidney failure
• O90.41 Hepatorenal syndrome following labor and delivery
• O90.49 Other postpartum acute kidney failure
• O90.5 Postpartum thyroiditis
• O90.6 Postpartum mood disturbance