D55 vs P57
D55 (Anemia due to enzyme disorders) compared with P57 (Kernicterus), 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. P57 carries an Excludes1 note covering D55: “hereditary hemolytic anemias (D55-D58)”
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
| D55Anemia due to enzyme disorders | P57Kernicterus | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | D50-D89 — Diseases of the Blood and Blood-forming Organs and Certain Disorders Involving the Immune Mechanism (D50-D89) | P00-P96 — Certain Conditions Originating in the Perinatal Period (P00-P96) |
| Definition | Anemia due to enzyme disorders is a non-billable ICD-10-CM category code (D55). | Kernicterus is a non-billable ICD-10-CM category code (P57). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources