E10.A vs R73.0
E10.A (Type 1 diabetes mellitus, presymptomatic) 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 E10.A: “type 1 diabetes mellitus, presymptomatic (E10.A-)”
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
| E10.AType 1 diabetes mellitus, presymptomatic | R73.0Abnormal glucose | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | E00-E89 — Endocrine, Nutritional and Metabolic Diseases (E00-E89) | R00-R99 — Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99) |
| Definition | Type 1 diabetes mellitus, presymptomatic is a non-billable ICD-10-CM category code (E10.A). | Abnormal glucose is a non-billable ICD-10-CM category code (R73.0). |
| Includes | brittle diabetes (mellitus) diabetes (mellitus) due to autoimmune process diabetes (mellitus) due to immune mediated pancreatic islet beta-cell destruction idiopathic diabetes (mellitus) | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources