Is O99 a billable code?
No. O99 is a header code that groups 96 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
O99: Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
O99 groups related diagnoses under other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under O99
- O99.011Anemia complicating pregnancy, first trimester
- O99.012Anemia complicating pregnancy, second trimester
- O99.013Anemia complicating pregnancy, third trimester
- O99.019Anemia complicating pregnancy, unspecified trimester
- O99.02Anemia complicating childbirth
- O99.03Anemia complicating the puerperium
- O99.111Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, first trimester
- O99.112Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, second trimester
- O99.113Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, third trimester
- O99.119Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, unspecified trimester
- O99.12Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating childbirth
- O99.13Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating the puerperium
- O99.210Obesity complicating pregnancy, unspecified trimester
- O99.211Obesity complicating pregnancy, first trimester
- O99.212Obesity complicating pregnancy, second trimester
- O99.213Obesity complicating pregnancy, third trimester
- O99.214Obesity complicating childbirth
- O99.215Obesity complicating the puerperium
- O99.280Endocrine, nutritional and metabolic diseases complicating pregnancy, unspecified trimester
- O99.281Endocrine, nutritional and metabolic diseases complicating pregnancy, first trimester
- O99.282Endocrine, nutritional and metabolic diseases complicating pregnancy, second trimester
- O99.283Endocrine, nutritional and metabolic diseases complicating pregnancy, third trimester
- O99.284Endocrine, nutritional and metabolic diseases complicating childbirth
- O99.285Endocrine, nutritional and metabolic diseases complicating the puerperium
- O99.310Alcohol use complicating pregnancy, unspecified trimester
- O99.311Alcohol use complicating pregnancy, first trimester
- O99.312Alcohol use complicating pregnancy, second trimester
- O99.313Alcohol use complicating pregnancy, third trimester
- O99.314Alcohol use complicating childbirth
- O99.315Alcohol use complicating the puerperium
- O99.320Drug use complicating pregnancy, unspecified trimester
- O99.321Drug use complicating pregnancy, first trimester
- O99.322Drug use complicating pregnancy, second trimester
- O99.323Drug use complicating pregnancy, third trimester
- O99.324Drug use complicating childbirth
- O99.325Drug use complicating the puerperium
- O99.330Smoking (tobacco) complicating pregnancy, unspecified trimester
- O99.331Smoking (tobacco) complicating pregnancy, first trimester
- O99.332Smoking (tobacco) complicating pregnancy, second trimester
- O99.333Smoking (tobacco) complicating pregnancy, third trimester
- O99.334Smoking (tobacco) complicating childbirth
- O99.335Smoking (tobacco) complicating the puerperium
- O99.340Other mental disorders complicating pregnancy, unspecified trimester
- O99.341Other mental disorders complicating pregnancy, first trimester
- O99.342Other mental disorders complicating pregnancy, second trimester
- O99.343Other mental disorders complicating pregnancy, third trimester
- O99.344Other mental disorders complicating childbirth
- O99.345Other mental disorders complicating the puerperium
- O99.350Diseases of the nervous system complicating pregnancy, unspecified trimester
- O99.351Diseases of the nervous system complicating pregnancy, first trimester
- O99.352Diseases of the nervous system complicating pregnancy, second trimester
- O99.353Diseases of the nervous system complicating pregnancy, third trimester
- O99.354Diseases of the nervous system complicating childbirth
- O99.355Diseases of the nervous system complicating the puerperium
- O99.411Diseases of the circulatory system complicating pregnancy, first trimester
- O99.412Diseases of the circulatory system complicating pregnancy, second trimester
- O99.413Diseases of the circulatory system complicating pregnancy, third trimester
- O99.419Diseases of the circulatory system complicating pregnancy, unspecified trimester
- O99.42Diseases of the circulatory system complicating childbirth
- O99.43Diseases of the circulatory system complicating the puerperium
- O99.511Diseases of the respiratory system complicating pregnancy, first trimester
- O99.512Diseases of the respiratory system complicating pregnancy, second trimester
- O99.513Diseases of the respiratory system complicating pregnancy, third trimester
- O99.519Diseases of the respiratory system complicating pregnancy, unspecified trimester
- O99.52Diseases of the respiratory system complicating childbirth
- O99.53Diseases of the respiratory system complicating the puerperium
- O99.611Diseases of the digestive system complicating pregnancy, first trimester
- O99.612Diseases of the digestive system complicating pregnancy, second trimester
- O99.613Diseases of the digestive system complicating pregnancy, third trimester
- O99.619Diseases of the digestive system complicating pregnancy, unspecified trimester
- O99.62Diseases of the digestive system complicating childbirth
- O99.63Diseases of the digestive system complicating the puerperium
- O99.711Diseases of the skin and subcutaneous tissue complicating pregnancy, first trimester
- O99.712Diseases of the skin and subcutaneous tissue complicating pregnancy, second trimester
- O99.713Diseases of the skin and subcutaneous tissue complicating pregnancy, third trimester
- O99.719Diseases of the skin and subcutaneous tissue complicating pregnancy, unspecified trimester
- O99.72Diseases of the skin and subcutaneous tissue complicating childbirth
- O99.73Diseases of the skin and subcutaneous tissue complicating the puerperium
- O99.810Abnormal glucose complicating pregnancy
- O99.814Abnormal glucose complicating childbirth
- O99.815Abnormal glucose complicating the puerperium
- O99.820Streptococcus B carrier state complicating pregnancy
- O99.824Streptococcus B carrier state complicating childbirth
- O99.825Streptococcus B carrier state complicating the puerperium
- O99.830Other infection carrier state complicating pregnancy
- O99.834Other infection carrier state complicating childbirth
- O99.835Other infection carrier state complicating the puerperium
- O99.840Bariatric surgery status complicating pregnancy, unspecified trimester
- O99.841Bariatric surgery status complicating pregnancy, first trimester
- O99.842Bariatric surgery status complicating pregnancy, second trimester
- O99.843Bariatric surgery status complicating pregnancy, third trimester
- O99.844Bariatric surgery status complicating childbirth
- O99.845Bariatric surgery status complicating the puerperium
- O99.891Other specified diseases and conditions complicating pregnancy
- O99.892Other specified diseases and conditions complicating childbirth
- O99.893Other specified diseases and conditions complicating puerperium
O99 questions
What does O99 mean?
O99 is the ICD-10-CM code for Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium. It is in chapter 15, Pregnancy, childbirth and the puerperium (O00-O9A).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.