O09.823 Supervision of pregnancy with history of in utero procedure during previous pregnancy, third trimester

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

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• V23.86 Pregnancy with history of in utero procedure during previous pregnancy (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 O09.823

Back-references to O09.82

• Type 2 Excludes: Z98.870 Personal history of in utero procedure during pregnancy ("supervision of current pregnancy with history of in utero procedure during previous pregnancy (O09.82-)")

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

• O09.813 Supervision of pregnancy resulting from assisted reproductive technology, third trimester
• O09.819 Supervision of pregnancy resulting from assisted reproductive technology, unspecified trimester
• O09.82 Supervision of pregnancy with history of in utero procedure during previous pregnancy
• O09.821 Supervision of pregnancy with history of in utero procedure during previous pregnancy, first trimester
• O09.822 Supervision of pregnancy with history of in utero procedure during previous pregnancy, second trimester
• O09.823 Supervision of pregnancy with history of in utero procedure during previous pregnancy, third trimester (this code)
• O09.829 Supervision of pregnancy with history of in utero procedure during previous pregnancy, unspecified trimester
• O09.89 Supervision of other high risk pregnancies
• O09.891 Supervision of other high risk pregnancies, first trimester
• O09.892 Supervision of other high risk pregnancies, second trimester
• O09.893 Supervision of other high risk pregnancies, third trimester