O99 is a non-billable/non-specific diagnosis code from the 2025 ICD-10-CM used to classify the following condition: Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium.
Includes
Conditions which complicate the pregnant state, are aggravated by the pregnancy or are a main reason for obstetric care
Use additional code
Code to identify specific condition
Type 2 excludes
When the reason for maternal care is that the condition is known or suspected to have affected the fetus (O35-O36)
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
Versions
2025
No changes
2024
No changes
2023
No changes
2022
No changes
2021
No changes
2020
No changes
2019
No changes
2018
No changes
2017
No changes
2016
New code