Z90.721 Acquired absence of ovaries, unilateral

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

Applies from Z90 Acquired absence of organs, not elsewhere classified

Includes

• postprocedural or post-traumatic loss of body part NEC

Excludes1 (never code together)

• congenital absence - see Alphabetical Index

Excludes2 (not included here)

• postprocedural absence of endocrine glands (E89.-)

Applies from Z90.7 Acquired absence of genital organ(s)

Excludes1 (never code together)

• personal history of sex reassignment (Z87.890)

Excludes2 (not included here)

• female genital mutilation status (N90.81-)

MS-DRG index

Defines the logic of DRG(s) 742-743 in MDC 13.

Approximate ICD-9-CM (GEMs)

• V45.77 Acquired absence of organ, genital organs (approximate)

Medicare Code Edits (MCE v43.1 (April 2026))

• 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 Z90.721

Back-references to Z90

• Type 2 Excludes: M95 Other acquired deformities of musculoskeletal system and connective tissue ("acquired absence of limbs and organs (Z89-Z90)")
• Use Additional: Z08 Encounter for follow-up examination after completed treatment for malignant neoplasm ("code to identify any acquired absence of organs (Z90.-)")

Diagnosis Index entries for Z90.721

• Absence (of) (organ or part) (complete or partial) › ovary (acquired) › unilateral
• Absence (of) (organ or part) (complete or partial) › oviduct (acquired) › unilateral
• Status (post) › oophorectomy › unilateral
• Status (post) › salpingo-oophorectomy › unilateral

Nearby codes

• Z90.71 Acquired absence of cervix and uterus
• Z90.710 Acquired absence of both cervix and uterus
• Z90.711 Acquired absence of uterus with remaining cervical stump
• Z90.712 Acquired absence of cervix with remaining uterus
• Z90.72 Acquired absence of ovaries
• Z90.721 Acquired absence of ovaries, unilateral (this code)
• Z90.722 Acquired absence of ovaries, bilateral
• Z90.79 Acquired absence of other genital organ(s)
• Z90.8 Acquired absence of other organs
• Z90.81 Acquired absence of spleen
• Z90.89 Acquired absence of other organs