I26 vs O00

I26 (Pulmonary embolism) 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. I26 carries an Excludes2 note covering O00: “pulmonary embolism complicating abortion, ectopic or molar pregnancy (O00-O07, O08.2)”

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

Side by side

	I26Pulmonary embolism	O00Ectopic pregnancy
Billing status	Non-billable header Report instead: I26.01, I26.02, I26.03, I26.04, I26.09	Non-billable header Report instead: O00.00, O00.01, O00.101, O00.102, O00.109
Classification	I00-I99 — Diseases of the Circulatory System (I00-I99)	O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A)
Definition	Pulmonary embolism is a non-billable ICD-10-CM category code (I26).	Ectopic pregnancy is a non-billable ICD-10-CM category code (O00).
Includes	pulmonary (acute) (artery)(vein) infarction pulmonary (acute) (artery)(vein) thromboembolism pulmonary (acute) (artery)(vein) thrombosis	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