A18.85 vs D73.1
A18.85 (Tuberculosis of spleen) compared with D73.1 (Hypersplenism), 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. D73.1 carries an Excludes1 note covering A18.85: “splenitis, splenomegaly in tuberculosis (A18.85)”
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
| A18.85Tuberculosis of spleen | D73.1Hypersplenism | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99) | D50-D89 — Diseases of the Blood and Blood-forming Organs and Certain Disorders Involving the Immune Mechanism (D50-D89) |
| Definition | Tuberculosis of spleen is a billable ICD-10-CM diagnosis code (A18.85). | Hypersplenism is a billable ICD-10-CM diagnosis code (D73.1). |
| Includes | infections due to Mycobacterium tuberculosis and Mycobacterium bovis | — |
| Use additional code | code, if applicable, for associated cachexia (E88.A) | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources