O90.3 Peripartum cardiomyopathy

The ICD-10-CM code for Peripartum cardiomyopathy is O90.3 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

15: Pregnancy, childbirth and the puerperium (O00-O9A)

Section

O85-O92: Complications predominantly related to the puerperium (O85-O92)

Category O90

14 codes (11 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to O90.3:

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

Inclusion Terms

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

U.S. Hospital Utilization

• An estimated 4,770 U.S. inpatient stays in 2023 included O90.3 among the documented diagnoses.
• 1,140 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

O90.3 use criteria for pregnancy associated (peripartum) cardiomyopathy

5) Pregnancy associated cardiomyopathy Pregnancy associated cardiomyopathy, code O90.3, is unique in that it may be diagnosed in the third trimester of pregnancy but may continue to progress months after delivery. For this reason, it is referred to as peripartum cardiomyopathy. Code O90.3 is only for use when the cardiomyopathy develops as a result of pregnancy in a patient who did not have pre-existing heart disease.

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)