N39 vs O00

N39 (Other disorders of urinary system) compared with O00 (Ectopic pregnancy), 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. N39 carries an Excludes2 note covering O00: “abortion or ectopic or molar pregnancy (O00-O07, O08.8)”

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

Side by side

	N39Other disorders of urinary system	O00Ectopic pregnancy
Billing status	Non-billable header Report instead: N39.0, N39.3, N39.41, N39.42, N39.43	Non-billable header Report instead: O00.00, O00.01, O00.101, O00.102, O00.109
Classification	N00-N99 — Diseases of the Genitourinary System (N00-N99)	O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A)
Definition	Other disorders of urinary system is a non-billable ICD-10-CM category code (N39).	Ectopic pregnancy is a non-billable ICD-10-CM category code (O00).
Includes	—	ruptured ectopic pregnancy
Use additional code	—	code from category O08 to identify any associated complication

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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