O9ANot billable, use a more specific code below
Maternal malignant neoplasms, traumatic injuries and abuse classifiable elsewhere but complicating pregnancy, childbirth and the puerperium
In Other obstetric conditions, not elsewhere classified (O94-O9A), chapter 15: Pregnancy, Childbirth and the Puerperium
30 billable codes under O9A: none are a CC or MCC; none map to an HCC.
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Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Coding of obstetric cases with O00-O9A codes: sequencing priority, trimester and fetus characters, principal diagnosis selection, delivery outcome, and pregnancy-related complications.
- General Rules for Obstetric Cases (page 63)
- Selection of OB Principal or First-listed Diagnosis (page 64)
- Pre-existing conditions versus conditions due to the pregnancy (page 65)
- Pre-existing hypertension in pregnancy (page 66)
- Fetal Conditions Affecting the Management of the Mother (page 66)
- HIV Infection in Pregnancy, Childbirth and the Puerperium (page 66)
- Diabetes mellitus in pregnancy (page 66)
- Long term use of insulin and oral hypoglycemics (page 67)
All codes under O9A
O9A can't be used on a claim. Pick a billable code below; grey headings group them.
- O9A.1Malignant neoplasm complicating pregnancy, childbirth and the puerperium
- O9A.11Malignant neoplasm complicating pregnancy
- O9A.111Malignant neoplasm complicating pregnancy, first trimester
- O9A.112Malignant neoplasm complicating pregnancy, second trimester
- O9A.113Malignant neoplasm complicating pregnancy, third trimester
- O9A.119Malignant neoplasm complicating pregnancy, unspecified trimester
- O9A.12Malignant neoplasm complicating childbirth
- O9A.13Malignant neoplasm complicating the puerperium
- O9A.2Injury, poisoning and certain other consequences of external causes complicating pregnancy, childbirth and the puerperium
- O9A.21Injury, poisoning and certain other consequences of external causes complicating pregnancy
- O9A.211Injury, poisoning and certain other consequences of external causes complicating pregnancy, first trimester
- O9A.212Injury, poisoning and certain other consequences of external causes complicating pregnancy, second trimester
- O9A.213Injury, poisoning and certain other consequences of external causes complicating pregnancy, third trimester
- O9A.219Injury, poisoning and certain other consequences of external causes complicating pregnancy, unspecified trimester
- O9A.22Injury, poisoning and certain other consequences of external causes complicating childbirth
- O9A.23Injury, poisoning and certain other consequences of external causes complicating the puerperium
- O9A.3Physical abuse complicating pregnancy, childbirth and the puerperium
- O9A.31Physical abuse complicating pregnancy
- O9A.311Physical abuse complicating pregnancy, first trimester
- O9A.312Physical abuse complicating pregnancy, second trimester
- O9A.313Physical abuse complicating pregnancy, third trimester
- O9A.319Physical abuse complicating pregnancy, unspecified trimester
- O9A.32Physical abuse complicating childbirth
- O9A.33Physical abuse complicating the puerperium
- O9A.4Sexual abuse complicating pregnancy, childbirth and the puerperium
- O9A.41Sexual abuse complicating pregnancy
- O9A.411Sexual abuse complicating pregnancy, first trimester
- O9A.412Sexual abuse complicating pregnancy, second trimester
- O9A.413Sexual abuse complicating pregnancy, third trimester
- O9A.419Sexual abuse complicating pregnancy, unspecified trimester
- O9A.42Sexual abuse complicating childbirth
- O9A.43Sexual abuse complicating the puerperium
- O9A.5Psychological abuse complicating pregnancy, childbirth and the puerperium
- O9A.51Psychological abuse complicating pregnancy
- O9A.511Psychological abuse complicating pregnancy, first trimester
- O9A.512Psychological abuse complicating pregnancy, second trimester
- O9A.513Psychological abuse complicating pregnancy, third trimester
- O9A.519Psychological abuse complicating pregnancy, unspecified trimester
- O9A.52Psychological abuse complicating childbirth
- O9A.53Psychological abuse complicating the puerperium
O9A MS-DRGs
As the principal diagnosis, the billable codes under O9A group to these 8 MS-DRGs (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
- DRG 817 Other Antepartum Diagnoses with O.R. Procedures with MCC (20 of 30 codes)
- DRG 818 Other Antepartum Diagnoses with O.R. Procedures with CC (20 of 30 codes)
- DRG 819 Other Antepartum Diagnoses with O.R. Procedures without CC/MCC (20 of 30 codes)
- DRG 831 Other Antepartum Diagnoses without O.R. Procedures with MCC (20 of 30 codes)
- DRG 832 Other Antepartum Diagnoses without O.R. Procedures with CC (20 of 30 codes)
- DRG 833 Other Antepartum Diagnoses without O.R. Procedures without CC/MCC (20 of 30 codes)
- DRG 769 Postpartum and Post Abortion Diagnoses with O.R. Procedures (5 of 30 codes)
- DRG 776 Postpartum and Post Abortion Diagnoses without O.R. Procedures (5 of 30 codes)
Other codes that refer to O9A
Notes on these codes point to O9A.
- CH10 Excludes2: complications of pregnancy, childbirth and the puerperium (O00-O9A)
- CH11 Excludes2: complications of pregnancy, childbirth and the puerperium (O00-O9A)
- CH12 Excludes2: complications of pregnancy, childbirth and the puerperium (O00-O9A)
- CH13 Excludes2: complications of pregnancy, childbirth and the puerperium (O00-O9A)
- CH14 Excludes2: complications of pregnancy, childbirth and the puerperium (O00-O9A)
- CH3 Excludes2: complications of pregnancy, childbirth and the puerperium (O00-O9A)
- CH6 Excludes2: complications of pregnancy, childbirth and the puerperium (O00-O9A)
- CH7 Excludes2: complications of pregnancy, childbirth and the puerperium (O00-O9A)
- CH8 Excludes2: complications of pregnancy, childbirth and the puerperium (O00-O9A)
- CH9 Excludes2: complications of pregnancy, childbirth and the puerperium (O00-O9A)
- T80-T88 Excludes2: complications of surgical procedures during pregnancy, childbirth and the puerperium (O00-O9A)
- Z33.1 Excludes1: complications of pregnancy (O00-O9A)
- Z34 Excludes1: any complication of pregnancy (O00-O9A)
- Z3A Code First: obstetric condition or encounter for delivery (O09-O60, O80-O82, O94-O9A)
- Z87.5 Includes: Conditions classifiable to O00-O9A
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
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.
Read more about health problems in pregnancy on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.