C81 vs C81.4
C81 and C81.4 can never be reported together. ICD-10-CM declares them mutually exclusive with an Excludes1 note, meaning the two conditions cannot occur in the same patient — so exactly one of them is correct for any given encounter.
The official note, declared on C81.4
nodular lymphocyte predominant Hodgkin lymphoma (C81.0-)
C81.4
Lymphocyte-rich Hodgkin lymphoma
Not billable
- Chapter 2
- Neoplasms
- Section
- C81-C96
Use when the record says
- Lymphocyte-rich classical Hodgkin lymphoma
Indexed under
- Lymphoma › Hodgkin › lymphocyte-rich (of) (malignant)
- Lymphoma › Hodgkin › lymphocyte-rich classical (of) (malignant)
Excludes1 is not always absolute: where two conditions covered by the note are genuinely unrelated, CMS guidance permits reporting both. Document the reasoning rather than assuming it. More on Excludes1 vs Excludes2 · FY2027