O99.4

Header — not billable

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

The ICD-10 code for diseases of the circulatory system complicating pregnancy, childbirth and the puerperium is O99.4.

O99.4 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 3 more specific codes below.

Clinical notes

Excludes1 (not coded here)

An Excludes1 note is a pure exclusion: the excluded condition and this code should never be reported together, because the two conditions cannot occur at the same time (e.g. a congenital form vs. an acquired form of the same disease).

peripartum cardiomyopathy (O90.3)

Excludes2 (not included here)

An Excludes2 note means the excluded condition is not part of this one, but a patient can have both at the same time — in that case 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.-)

Also known as

Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.

Conditions in I00-I99

Documentation support

General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.

•This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
•Confirm the excluded condition(s) listed above are not also present — Excludes1 conditions cannot be coded together with this one.
•As a general rule, code to the highest level of specificity supported by the documentation in the medical record.