MCMedicalCodingSoftware
O9A.1

O9A.1: Malignant neoplasm complicating pregnancy, childbirth and the puerperium

Non-billable headerICD-10-CM

O9A.1 is a non-billable header ICD-10-CM code for malignant neoplasm complicating pregnancy, childbirth and the puerperium. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes2: not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

  • maternal care for benign tumor of corpus uteri (O34.1-)
  • maternal care for benign tumor of cervix (O34.4-)

Use additional code

Add a secondary code to capture the detail described below.

  • code to identify neoplasm

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead O9A.1

3 child codes. Green means billable.

Other codes under O9A

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.