O99 Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium is O99 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
O94-O9A: Other obstetric conditions, not elsewhere classified (O94-O9A)
Category O99
124 codes (96 billable)
FY2026 Status
Stable since FY2024
Includes
  • conditions which complicate the pregnant state, are aggravated by the pregnancy or are a main reason for obstetric care
Excludes2
Not included here. These conditions are coded elsewhere but may be coded together if applicable.
  • when the reason for maternal care is that the condition is known or suspected to have affected the fetus (O35-O36)
Use Additional Code
  • code to identify specific condition

References

Related Codes

More Specific Codes

O99.0 Anemia complicating pregnancy, childbirth and the puerperium O99.01 Anemia complicating pregnancy O99.011 Anemia complicating pregnancy, first trimester O99.012 Anemia complicating pregnancy, second trimester O99.013 Anemia complicating pregnancy, third trimester O99.019 Anemia complicating pregnancy, unspecified trimester O99.02 Anemia complicating childbirth O99.03 Anemia complicating the puerperium O99.1 Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, childbirth and the puerperium O99.11 Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy O99.111 Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, first trimester O99.112 Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, second trimester O99.113 Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, third trimester O99.119 Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, unspecified trimester O99.12 Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating childbirth O99.13 Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating the puerperium O99.2 Endocrine, nutritional and metabolic diseases complicating pregnancy, childbirth and the puerperium O99.21 Obesity complicating pregnancy, childbirth, and the puerperium O99.210 Obesity complicating pregnancy, unspecified trimester O99.211 Obesity complicating pregnancy, first trimester O99.212 Obesity complicating pregnancy, second trimester O99.213 Obesity complicating pregnancy, third trimester O99.214 Obesity complicating childbirth O99.215 Obesity complicating the puerperium O99.28 Other endocrine, nutritional and metabolic diseases complicating pregnancy, childbirth and the puerperium O99.280 Endocrine, nutritional and metabolic diseases complicating pregnancy, unspecified trimester O99.281 Endocrine, nutritional and metabolic diseases complicating pregnancy, first trimester O99.282 Endocrine, nutritional and metabolic diseases complicating pregnancy, second trimester O99.283 Endocrine, nutritional and metabolic diseases complicating pregnancy, third trimester O99.284 Endocrine, nutritional and metabolic diseases complicating childbirth

Related Codes in O99

O99.0 Anemia complicating pregnancy, childbirth and the puerperium O99.01 Anemia complicating pregnancy O99.011 Anemia complicating pregnancy, first trimester O99.012 Anemia complicating pregnancy, second trimester O99.013 Anemia complicating pregnancy, third trimester O99.019 Anemia complicating pregnancy, unspecified trimester O99.02 Anemia complicating childbirth O99.03 Anemia complicating the puerperium O99.1 Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, childbirth and the puerperium O99.11 Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy O99.111 Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, first trimester O99.112 Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, second trimester O99.113 Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, third trimester O99.119 Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, unspecified trimester O99.12 Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating childbirth O99.13 Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating the puerperium O99.2 Endocrine, nutritional and metabolic diseases complicating pregnancy, childbirth and the puerperium O99.21 Obesity complicating pregnancy, childbirth, and the puerperium O99.210 Obesity complicating pregnancy, unspecified trimester O99.211 Obesity complicating pregnancy, first trimester
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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