O24.4 vs R73.0
O24.4 (Gestational diabetes mellitus) compared with R73.0 (Abnormal glucose), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. R73.0 carries an Excludes1 note covering O24.4: “gestational diabetes (O24.4-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
No — do not report together. R73.0 carries an Excludes1 note covering O24.4: “diabetes mellitus in pregnancy, childbirth and the puerperium (O24.-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| O24.4Gestational diabetes mellitus | R73.0Abnormal glucose | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A) | R00-R99 — Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99) |
| Definition | Gestational diabetes mellitus is a non-billable ICD-10-CM category code (O24.4). | Abnormal glucose is a non-billable ICD-10-CM category code (R73.0). |
| Includes | Diabetes mellitus arising in pregnancy Gestational diabetes mellitus NOS | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources