ICDcodes.org
FY2027

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

Not billable

Is O9A.1 billable?

No — O9A.1 is a non-billable header code. O9A.1 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 6 billable codes beneath O9A.1.

O9A.1 at a glance

CodeO9A.1
DescriptionMalignant neoplasm complicating pregnancy, childbirth and the puerperium
BillableNo — header code
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Use additional code

Report an additional code alongside O9A.1 to fully describe the condition. O9A.1 is sequenced first.

  • code to identify neoplasm

Excludes2 — not included here

The conditions below are not part of O9A.1, but a patient may have both at the same time. When documentation supports it, O9A.1 and the excluded code may both be reported.

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

Inclusion terms

Alternative wording in documentation that is classified to O9A.1.

  • Conditions in C00-C96

Excludes1 — never code together — inherited from Chapter 15

The conditions below can never be reported together with O9A.1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • supervision of normal pregnancy (Z34.-)

Use additional code — inherited from Chapter 15

Report an additional code alongside O9A.1 to fully describe the condition. O9A.1 is sequenced first.

  • code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.

Excludes2 — not included here — inherited from Chapter 15

The conditions below are not part of O9A.1, but a patient may have both at the same time. When documentation supports it, O9A.1 and the excluded code may both be reported.

  • mental and behavioral disorders associated with the puerperium (F53.-)
  • obstetrical tetanus (A34)
  • postpartum necrosis of pituitary gland (E23.0)
  • puerperal osteomalacia (M83.0)

What codes fall under O9A.1? (3)

How long has O9A.1 existed?

O9A.1 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.

What other codes are in the O9A family? (4)