ICD10BillableValid for clinical use

ICD-10 Code O9A.119: Malignant neoplasm complicating pregnancy, unspecified trimester

O9A.119 is a billable ICD-10 diagnosis code used to classify Malignant neoplasm complicating pregnancy, unspecified trimester in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Pregnancy, childbirth and the puerperium (O00-O9A).

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Pregnancy, childbirth and the puerperium (O00-O9A).

When is it used?

  • May be used when a clinician documents malignant neoplasm complicating pregnancy, unspecified trimester in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
15Pregnancy, childbirth and the puerperium (O00-O9A)
block
O94-O9AOther obstetric conditions, not elsewhere classified
category
O9AMaternal malignant neoplasms, traumatic injuries and abuse classifiable elsewhere but complicating pregnancy, childbirth and the puerperium
category
O9A.1Malignant neoplasm complicating pregnancy, childbirth and the puerperium
category
O9A.11Malignant neoplasm complicating pregnancy
currentO9A.11

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

ObstetricianGynecologistOncologist

Coding guidelines

Common synonyms

Malignant neoplasm complicating pregnancy, unspecified trimesterMalignant neoplasm complicating pregnancy

Frequently asked questions

Code details

CodeO9A.119
SystemICD10
Display nameMalignant neoplasm complicating pregnancy, unspecified trimester
ChapterPregnancy, childbirth and the puerperium (O00-O9A)
BlockOther obstetric conditions, not elsewhere classified

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code O9A.119 for Malignant neoplasm complicating pregnancy, unspecified trimester | HealthAssure