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

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Reference O99 with the canonical source and edition:

O99 — Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/O99

Canonical URL: https://icd10codingpro.com/codes/O99

Related Codes

More Specific Codes

O99.0 Anemia complicating pregnancy, childbirth and 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 O99.2 Endocrine, nutritional and metabolic diseases complicating pregnancy, childbirth and the puerperium O99.3 Mental disorders and diseases of the nervous system complicating pregnancy, childbirth and the puerperium O99.4 Diseases of the circulatory system complicating pregnancy, childbirth and the puerperium O99.5 Diseases of the respiratory system complicating pregnancy, childbirth and the puerperium O99.6 Diseases of the digestive system complicating pregnancy, childbirth and the puerperium O99.7 Diseases of the skin and subcutaneous tissue complicating pregnancy, childbirth and the puerperium O99.8 Other specified diseases and conditions complicating pregnancy, childbirth and the puerperium

All Codes in O99

Every most-specific code under O99 Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium (96 codes):

Show the complete O99 code list
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 O99.111 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 O99.210 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 O99.280 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 O99.285 Endocrine, nutritional and metabolic diseases complicating the puerperium O99.310 Alcohol use complicating pregnancy, unspecified trimester O99.311 Alcohol use complicating pregnancy, first trimester O99.312 Alcohol use complicating pregnancy, second trimester O99.313 Alcohol use complicating pregnancy, third trimester O99.314 Alcohol use complicating childbirth O99.315 Alcohol use complicating the puerperium O99.320 Drug use complicating pregnancy, unspecified trimester O99.321 Drug use complicating pregnancy, first trimester O99.322 Drug use complicating pregnancy, second trimester O99.323 Drug use complicating pregnancy, third trimester O99.324 Drug use complicating childbirth O99.325 Drug use complicating the puerperium O99.330 Smoking (tobacco) complicating pregnancy, unspecified trimester O99.331 Smoking (tobacco) complicating pregnancy, first trimester O99.332 Smoking (tobacco) complicating pregnancy, second trimester O99.333 Smoking (tobacco) complicating pregnancy, third trimester O99.334 Smoking (tobacco) complicating childbirth O99.335 Smoking (tobacco) complicating the puerperium O99.340 Other mental disorders complicating pregnancy, unspecified trimester O99.341 Other mental disorders complicating pregnancy, first trimester O99.342 Other mental disorders complicating pregnancy, second trimester O99.343 Other mental disorders complicating pregnancy, third trimester O99.344 Other mental disorders complicating childbirth O99.345 Other mental disorders complicating the puerperium O99.350 Diseases of the nervous system complicating pregnancy, unspecified trimester O99.351 Diseases of the nervous system complicating pregnancy, first trimester O99.352 Diseases of the nervous system complicating pregnancy, second trimester O99.353 Diseases of the nervous system complicating pregnancy, third trimester O99.354 Diseases of the nervous system complicating childbirth O99.355 Diseases of the nervous system complicating the puerperium O99.411 Diseases of the circulatory system complicating pregnancy, first trimester O99.412 Diseases of the circulatory system complicating pregnancy, second trimester O99.413 Diseases of the circulatory system complicating pregnancy, third trimester O99.419 Diseases of the circulatory system complicating pregnancy, unspecified trimester O99.42 Diseases of the circulatory system complicating childbirth O99.43 Diseases of the circulatory system complicating the puerperium O99.511 Diseases of the respiratory system complicating pregnancy, first trimester O99.512 Diseases of the respiratory system complicating pregnancy, second trimester O99.513 Diseases of the respiratory system complicating pregnancy, third trimester O99.519 Diseases of the respiratory system complicating pregnancy, unspecified trimester O99.52 Diseases of the respiratory system complicating childbirth O99.53 Diseases of the respiratory system complicating the puerperium O99.611 Diseases of the digestive system complicating pregnancy, first trimester O99.612 Diseases of the digestive system complicating pregnancy, second trimester O99.613 Diseases of the digestive system complicating pregnancy, third trimester O99.619 Diseases of the digestive system complicating pregnancy, unspecified trimester O99.62 Diseases of the digestive system complicating childbirth O99.63 Diseases of the digestive system complicating the puerperium O99.711 Diseases of the skin and subcutaneous tissue complicating pregnancy, first trimester O99.712 Diseases of the skin and subcutaneous tissue complicating pregnancy, second trimester O99.713 Diseases of the skin and subcutaneous tissue complicating pregnancy, third trimester O99.719 Diseases of the skin and subcutaneous tissue complicating pregnancy, unspecified trimester O99.72 Diseases of the skin and subcutaneous tissue complicating childbirth O99.73 Diseases of the skin and subcutaneous tissue complicating the puerperium O99.810 Abnormal glucose complicating pregnancy O99.814 Abnormal glucose complicating childbirth O99.815 Abnormal glucose complicating the puerperium O99.820 Streptococcus B carrier state complicating pregnancy O99.824 Streptococcus B carrier state complicating childbirth O99.825 Streptococcus B carrier state complicating the puerperium O99.830 Other infection carrier state complicating pregnancy O99.834 Other infection carrier state complicating childbirth O99.835 Other infection carrier state complicating the puerperium O99.840 Bariatric surgery status complicating pregnancy, unspecified trimester O99.841 Bariatric surgery status complicating pregnancy, first trimester O99.842 Bariatric surgery status complicating pregnancy, second trimester O99.843 Bariatric surgery status complicating pregnancy, third trimester O99.844 Bariatric surgery status complicating childbirth O99.845 Bariatric surgery status complicating the puerperium O99.891 Other specified diseases and conditions complicating pregnancy O99.892 Other specified diseases and conditions complicating childbirth O99.893 Other specified diseases and conditions complicating puerperium
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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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