C96.6 vs D76
C96.6 (Unifocal Langerhans-cell histiocytosis) compared with D76 (Other specified diseases with participation of lymphoreticular and reticulohistiocytic tissue), 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. D76 carries an Excludes1 note covering C96.6: “eosinophilic granuloma (C96.6)”
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. D76 carries an Excludes1 note covering C96.6: “histiocytosis X, unifocal (C96.6)”
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. D76 carries an Excludes1 note covering C96.6: “Langerhans-cell histiocytosis NOS (C96.6)”
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. D76 carries an Excludes1 note covering C96.6: “Langerhans-cell histiocytosis, unifocal (C96.6)”
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
| C96.6Unifocal Langerhans-cell histiocytosis | D76Other specified diseases with participation of lymphoreticular and reticulohistiocytic tissue | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | C00-D49 — Neoplasms (C00-D49) | D50-D89 — Diseases of the Blood and Blood-forming Organs and Certain Disorders Involving the Immune Mechanism (D50-D89) |
| Definition | Unifocal Langerhans-cell histiocytosis is a billable ICD-10-CM diagnosis code (C96.6). | Other specified diseases with participation of lymphoreticular and reticulohistiocytic tissue is a non-billable ICD-10-CM category code (D76). |
| Includes | Eosinophilic granuloma Histiocytosis X, unifocal Histiocytosis X NOS Langerhans-cell histiocytosis NOS | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources