D45 vs D75.1
D45 (Polycythemia vera) compared with D75.1 (Secondary polycythemia), 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. D45 carries an Excludes1 note covering D75.1: “secondary polycythemia (D75.1)”
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. D75.1 carries an Excludes1 note covering D45: “polycythemia vera (D45)”
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
| D45Polycythemia vera | D75.1Secondary polycythemia | |
|---|---|---|
| Billing status | Billable | Billable |
| 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 | Polycythemia vera is a billable ICD-10-CM diagnosis code (D45). | Secondary polycythemia is a billable ICD-10-CM diagnosis code (D75.1). |
| Includes | — | Acquired polycythemia Emotional polycythemia Erythrocytosis NOS Hypoxemic polycythemia |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources