ICD-10-CM › Z3A › Z3A.0 Z3A.01 Less than 8 weeks gestation of pregnancyBillable ICD-10-CM code, FY2026. Exempt from present-on-admission (POA) reporting.
Applies from Z3A Weeks of gestation Code first obstetric condition or encounter for delivery (O09-O60, O80-O82, O94-O9A) Notes Codes from category Z3A are for use, only on the maternal record, to indicate the weeks of gestation of the pregnancy, if known. MS-DRG index Defines the logic of DRG(s) 951 in MDC 23.
Approximate ICD-9-CM (GEMs) Medicare Code Edits (MCE v43.1 (April 2026)) Maternity diagnoses (age 9 through 64) : Age conflict edit. These diagnoses are clinically expected only in patients age 9 through 64.Unacceptable principal diagnosis : These codes describe a circumstance which influences care but is not a current illness or injury, or capture only an underlying condition, and are unacceptable as principal diagnosis.Diagnosis Index entries for Z3A.01 Pregnancy (single) (uterine) › weeks of gestation › less than 8 weeks Nearby codes Z3AZ3A.0Z3A.00Z3A.01 Less than 8 weeks gestation of pregnancy (this code)Z3A.08Z3A.09Z3A.1Z3A.10Z3A.11