N48 vs R18

N48 (Other disorders of penis) compared with R18 (Ascites), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).

Can these codes be reported together?

Yes, when both are documented. R18 carries an Excludes2 note covering N48: “symptoms referable to male genital organs (N48-N50)”

Excludes2 marks distinct conditions — both may be reported when both are documented.

Side by side

	N48Other disorders of penis	R18Ascites
Billing status	Non-billable header Report instead: N48.0, N48.1, N48.21, N48.22, N48.29	Non-billable header Report instead: R18.0, R18.8
Classification	N00-N99 — Diseases of the Genitourinary System (N00-N99)	R00-R99 — Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99)
Definition	Other disorders of penis is a non-billable ICD-10-CM category code (N48).	Ascites is a non-billable ICD-10-CM category code (R18).
Includes	—	fluid in peritoneal cavity

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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources