Excludes1 pair
C61 vs C63.7
C61 and C63.7 are not coded together. ICD-10-CM declares them mutually exclusive with an Excludes1 note — the two conditions are not expected to occur together, so exactly one of them is normally correct for a given encounter. The Official Guidelines carve out one exception: if the two conditions are clearly unrelated to each other, both may be reported.
The official note, declared on C61
malignant neoplasm of seminal vesicle (C63.7)
C61
Malignant neoplasm of prostate
Billable
- Chapter 2
- Neoplasms
- Section
- C60-C63
Indexed under
- Adenocarcinoma › duct › unspecified site › male
- Carcinoma › endometrioid › unspecified site › male
- Cystadenocarcinoma › endometrioid › unspecified site › male
C63.7
Malignant neoplasm of other specified male genital organs
BillableUnspecified
- Chapter 2
- Neoplasms
- Section
- C60-C63
Use when the record says
- Malignant neoplasm of seminal vesicle
- Malignant neoplasm of tunica vaginalis
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