ICD-10-CM 2027
ICD-10 code for incidental finding pregnancy
Z33.1
Pregnant state, incidental
From the official ICD-10-CM alphabetic index entry “Pregnancy (single) (uterine) › incidental finding”. Page updated September 29, 2026.
About coding incidental finding pregnancy
The ICD-10-CM code for incidental finding pregnancy is Z33.1 (Pregnant state, incidental).
Within Z33 (Pregnant state), Z33.1 is specifically for Pregnant state, incidental. Related codes cover encounter for elective termination of pregnancy (Z33.2) and gestational carrier (Z33.3).
Don't report Z33.1 together with the conditions in its Excludes1 note: complications of pregnancy (O00-O9A) and pregnant state, gestational carrier (Z33.3).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Don't confuse with (Excludes1 for Z33.1)
Common questions about incidental finding pregnancy ICD-10 codes
What is the ICD-10 code for incidental finding pregnancy?
- Z33.1 — Pregnant state, incidental.
Is Z33.1 billable?
- Yes. Z33.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z33.1 be used as a principal diagnosis?
- No. It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.
Is Z33.1 a CC or MCC?
- No. Z33.1 is neither a CC nor an MCC under MS-DRG v44.0.