O09.621 Supervision of young multigravida, first trimester

Billable ICD-10-CM code, FY2026. Exempt from present-on-admission (POA) reporting.

Applies from O09.6 Supervision of young primigravida and multigravida

Applicable to

• Supervision of pregnancy for a female less than 16 years old at expected date of delivery

MS-DRG index

Defines the logic of DRG(s) 998 in MDC 14.

Approximate ICD-9-CM (GEMs)

• V23.84 Supervision of high-risk pregnancy with young multigravida (approximate)

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.

Code annotations containing back-references to O09.621

Back-references to O09

• Type 1 Excludes: Z34 Encounter for supervision of normal pregnancy ("encounter for supervision of high risk pregnancy (O09.-)")
• Code First: Z3A Weeks of gestation ("obstetric condition or encounter for delivery (O09-O60, O80-O82, O94-O9A)")

Nearby codes

• O09.611 Supervision of young primigravida, first trimester
• O09.612 Supervision of young primigravida, second trimester
• O09.613 Supervision of young primigravida, third trimester
• O09.619 Supervision of young primigravida, unspecified trimester
• O09.62 Supervision of young multigravida
• O09.621 Supervision of young multigravida, first trimester (this code)
• O09.622 Supervision of young multigravida, second trimester
• O09.623 Supervision of young multigravida, third trimester
• O09.629 Supervision of young multigravida, unspecified trimester
• O09.7 Supervision of high risk pregnancy due to social problems
• O09.70 Supervision of high risk pregnancy due to social problems, unspecified trimester