2026 ICD-10-CM Diagnosis Code O9A.13Malignant neoplasm complicating the puerperium

ICD-10-CM Codes›O00-O9A›O94-O9A›O9A

ICD-10-CM O9A.13
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

O9A.13 is a billable ICD-10-CM diagnosis code for malignant neoplasm complicating the puerperium. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). The code is restricted by the Medicare Code Editor to maternity cases (age 9 through 64). In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Complications specified during the puerperium.

Code Identity

ICD-10-CM Code
O9A.13
Billable Status
Yes — Valid for Submission
Code Describes
Malignant neoplasm complicating the puerperium
Short Description
Malignant neoplasm complicating the puerperium
Same as the full description in the CMS dataset.
Parent Code
O9A.1
Malignant neoplasm complicating pregnancy, childbirth and the puerperium

Code Classification

ChapterO00-O9APregnancy, childbirth and the puerperium
SectionO94-O9AOther obstetric conditions, not elsewhere classified
CategoryO9AMaternal malignant neoplasms, traumatic injuries and abuse classifiable elsewhere but complicating pregnancy, childbirth and the puerperium
This CodeO9A.13Malignant neoplasm complicating the puerperium

Code EditsBilling

Medicare Code Editor checks that affect claim validity for O9A.13.

Maternity diagnoses
The Medicare Code Editor detects inconsistencies in maternity cases by checking a patient's age and any diagnosis on the patient's record. The maternity code edits apply to patients age ange is 9–64 years inclusive (e.g., diabetes in pregnancy, antepartum pulmonary complication).

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Puerperal, puerperium(complicated by, complications)
      • malignancy

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR PRG027
Complications specified during the puerperium
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Postpartum Care

Taking home a new baby is one of the happiest times in a woman's life. But it also presents both physical and emotional challenges. :

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert O9A.13 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
648.94 Oth curr cond-postpartum
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About O9A.13Overview

Is O9A.13 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report malignant neoplasm complicating the puerperium on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Who can O9A.13 be reported for?

The Medicare Code Editor checks malignant neoplasm complicating the puerperium against patient demographics: this code is intended for maternity cases (age 9 through 64). Claims outside these limits are flagged as inconsistent.

What is the ICD-9 equivalent of O9A.13?

Under the General Equivalence Mappings, malignant neoplasm complicating the puerperium converts to ICD-9-CM 648.94 (oth curr cond-postpartum). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.