2027 ICD-10-CM Diagnosis Code O9AMaternal malignant neoplasms, traumatic injuries and abuse classifiable elsewhere but complicating pregnancy, childbirth and the puerperium

ICD-10-CM Codes›O00-O9A›O94-O9A›O9A

ICD-10-CM O9A
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

O9A is a non-billable ICD-10-CM category code for maternal malignant neoplasms, traumatic injuries and abuse classifiable elsewhere but complicating pregnancy, childbirth and the puerperium, so it cannot be submitted on claims. Use a more specific code from this category instead, such as O9A.111, O9A.112, O9A.113, and O9A.119.

Code Identity

ICD-10-CM Code
O9A
Billable Status
No — Non-Billable Category
Code Describes
Maternal malignant neoplasms, traumatic injuries and abuse classifiable elsewhere but complicating pregnancy, childbirth and the puerperium
Short Description
Maternl malig or injury compl preg/childbrth
Chapter
O94-O9A
Other obstetric conditions, not elsewhere classified

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 CodeO9AMaternal malignant neoplasms, traumatic injuries and abuse classifiable elsewhere but complicating pregnancy, childbirth and the puerperium

Specific Coding for Maternl malig or injury compl preg/childbrthOverview

Non-specific codes like O9A require more characters. Use one of these billable codes instead:

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

  • O9A.11 for Malignant neoplasm complicating pregnancy

  • Use O9A.12 for Malignant neoplasm complicating childbirth

  • Use O9A.13 for Malignant neoplasm complicating the puerperium

  • O9A.2 for Injury, poisoning and certain other consequences of external causes complicating pregnancy, childbirth and the puerperium

  • O9A.21 for Injury, poisoning and certain other consequences of external causes complicating pregnancy

  • Use O9A.22 for Injury, poisoning and certain other consequences of external causes complicating childbirth

  • Use O9A.23 for Injury, poisoning and certain other consequences of external causes complicating the puerperium

  • O9A.3 for Physical abuse complicating pregnancy, childbirth and the puerperium

  • O9A.31 for Physical abuse complicating pregnancy

  • Use O9A.32 for Physical abuse complicating childbirth

  • Use O9A.33 for Physical abuse complicating the puerperium

  • O9A.4 for Sexual abuse complicating pregnancy, childbirth and the puerperium

  • O9A.41 for Sexual abuse complicating pregnancy

  • Use O9A.42 for Sexual abuse complicating childbirth

  • Use O9A.43 for Sexual abuse complicating the puerperium

  • O9A.5 for Psychological abuse complicating pregnancy, childbirth and the puerperium

  • O9A.51 for Psychological abuse complicating pregnancy

  • Use O9A.52 for Psychological abuse complicating childbirth

  • Use O9A.53 for Psychological abuse complicating the puerperium

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to O9A: its own notes plus those printed at Chapter 15. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From Chapter 15 (O00-O9A) Pregnancy, childbirth and the puerperium applies to 2,481 codes
  • supervision of normal pregnancy (Z34.-)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 15 (O00-O9A) Pregnancy, childbirth and the puerperium applies to 2,481 codes
  • mental and behavioral disorders associated with the puerperium (F53.-)
  • obstetrical tetanus (A34)
  • postpartum necrosis of pituitary gland (E23.0)
  • puerperal osteomalacia (M83.0)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Chapter 15 (O00-O9A) Pregnancy, childbirth and the puerperium applies to 2,481 codes
  • code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.

Notes

General instructions on how these codes are used.

From Chapter 15 (O00-O9A) Pregnancy, childbirth and the puerperium applies to 2,481 codes
  • CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS
  • Codes from this chapter are for use for conditions related to or aggravated by the pregnancy, childbirth, or by the puerperium (maternal causes or obstetric causes)
  • Trimesters are counted from the first day of the last menstrual period. They are defined as follows:
  • 1st trimester- less than 14 weeks 0 days
  • 2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days
  • 3rd trimester- 28 weeks 0 days until delivery

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Patient EducationClinical

Health Problems in Pregnancy

A health problem in pregnancy is any disease or condition that could affect your health or the health of your fetus. Some health problems may make it more likely that you will have a high-risk pregnancy. A high-risk pregnancy is one in which you, your fetus, or both are at higher risk for health problems than in a typical pregnancy.

The full article covers:

  • What are health problems in pregnancy?
  • What raises my risk for health problems during pregnancy?
  • Can chronic health conditions cause problems in pregnancy?
  • Can health problems in pregnancy be prevented?

Read the full article at MedlinePlus

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

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About O9AOverview

Is O9A a billable code?

No. This is a category header that groups the codes for maternal malignant neoplasms, traumatic injuries and abuse classifiable elsewhere but complicating pregnancy, childbirth and the puerperium, and headers cannot be submitted on claims. Claims for maternal malignant neoplasms, traumatic injuries and abuse classifiable elsewhere but complicating pregnancy, childbirth and the puerperium need a more specific code from this category, such as O9A.111, O9A.112, and O9A.113.