Unsp diabetes mellitus in pregnancy, unspecified trimester

This code signifies a diagnosis of diabetes mellitus that is present during pregnancy, but the specific type of diabetes (e.g., pre-existing type 1, type 2, or gestational) has not been documented. Furthermore, the trimester of pregnancy at the time of diagnosis or encounter is also unspecified.

This code is appropriate when a pregnant patient is diagnosed with diabetes, but the medical record lacks sufficient detail to classify the diabetes type or the specific trimester. It should be used as a last resort when more specific codes (e.g., O24.0-O24.4) cannot be assigned due to incomplete documentation.

• Avoid using this code if the documentation specifies the type of diabetes (e.g., pre-existing, gestational) or the trimester.
• Query the provider for clarification on the type of diabetes and the trimester to allow for more specific code assignment.
• This code should be sequenced as a primary diagnosis when the diabetes is the main reason for the encounter, or as a secondary diagnosis when it is a co-morbidity.