ICD-10-CM 2027
ICD-10 code for care antenatal
Encounter for supervision of normal pregnancy, unspecified, unspecified trimester
From the official ICD-10-CM alphabetic index entry “Antenatal › care (normal pregnancy)”. Page updated September 29, 2026.
About coding care antenatal
The ICD-10-CM code for care antenatal is Z34.90 (Encounter for supervision of normal pregnancy, unspecified, unspecified trimester).
Within Z34.9, choose Z34.90 (unspecified trimester) only when documentation doesn't support a more specific option: first trimester (Z34.91), second trimester (Z34.92) and third trimester (Z34.93).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 951 (Other Factors Influencing Health Status, relative weight 0.5577), in MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about care antenatal ICD-10 codes
What is the ICD-10 code for care antenatal?
- Z34.90 — Encounter for supervision of normal pregnancy, unspecified, unspecified trimester.
Is Z34.90 billable?
- Yes. Z34.90 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z34.90 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 Z34.90 a CC or MCC?
- No. Z34.90 is neither a CC nor an MCC under MS-DRG v44.0.