`O09.523` Supervision of elderly multigravida, third trimester

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

Applies from O09.5 Supervision of elderly primigravida and multigravida

Applicable to

Pregnancy for a female 35 years and older at expected date of delivery

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

659.61 Elderly multigravida, delivered with or without mention of antepartum condition (approximate)
659.63 Elderly multigravida, antepartum condition or complication (approximate)
V23.82 Supervision of high-risk pregnancy with elderly 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 O09.523

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

O09.513 Supervision of elderly primigravida, third trimester
O09.519 Supervision of elderly primigravida, unspecified trimester
O09.52 Supervision of elderly multigravida
O09.521 Supervision of elderly multigravida, first trimester
O09.522 Supervision of elderly multigravida, second trimester
O09.523 Supervision of elderly multigravida, third trimester (this code)
O09.529 Supervision of elderly multigravida, unspecified trimester
O09.6 Supervision of young primigravida and multigravida
O09.61 Supervision of young primigravida
O09.611 Supervision of young primigravida, first trimester
O09.612 Supervision of young primigravida, second trimester