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N30 vs O08.8

N30 (Cystitis) compared with O08.8 (Other complications following an ectopic and molar 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. N30 carries an Excludes2 note covering O08.8: “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

N30CystitisO08.8Other complications following an ectopic and molar pregnancy
Billing statusNon-billable header

Report instead: N30.00, N30.01, N30.10, N30.11, N30.20

Non-billable header

Report instead: O08.81, O08.82, O08.83, O08.89

ClassificationN00-N99 — Diseases of the Genitourinary System (N00-N99)O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A)
DefinitionCystitis is a non-billable ICD-10-CM category code (N30).Other complications following an ectopic and molar pregnancy is a non-billable ICD-10-CM category code (O08.8).
Use additional code
code to identify infectious agent (B95-B97)
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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