O99.4

ICD-10Non-billable category

Diseases of the circulatory system compl preg/chldbrth

Official ICD-10-CM descriptor (FY2026)

Diseases of the circulatory system complicating pregnancy, childbirth and the puerperium

O99.4 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.

Inclusion terms

  • Conditions in I00-I99

Excludes1

Not coded here. An Excludes1 code should never be reported at the same time as the code above it.

  • peripartum cardiomyopathy (O90.3)

Excludes2

Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported together.

  • hypertensive disorders (O10-O16)
  • obstetric embolism (O88.-)
  • venous complications and cerebrovenous sinus thrombosis in labor, childbirth and the puerperium (O87.-)
  • venous complications and cerebrovenous sinus thrombosis in pregnancy (O22.-)

ICD-10-CM FY2026 defines 3 codes beneath O99.4. See the ICD-10-CM index for what this site publishes.

Related codes in O99

Where this code sits

Parent code
O99

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.

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