Q50.31 is the authoritative medical code for Accessory ovary. This classification is used in medical billing and clinical recording to specify the clinical criteria for accessory ovary (ICD-10-CM Q50.31), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Accessory ovary is a billable ICD-10-CM diagnosis code Q50.31. Excludes1 (not coded here): androgen insensitivity syndrome E34.5-; syndromes associated with anomalies in the number and form of chromosomes Q90-Q99.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for Q50.31 in the official ICD-10-CM tabular list.
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- androgen insensitivity syndrome E34.5-
- syndromes associated with anomalies in the number and form of chromosomes Q90-Q99
Frequently Asked Questions (FAQ) & Clinical Guidance
What can't be coded together with Q50.31?
Per official ICD-10-CM Excludes1 instructions, Q50.31 must not be reported together with: androgen insensitivity syndrome (E34.5-); syndromes associated with anomalies in the number and form of chromosomes (Q90-Q99).
Nearest Codes in This Family
Official ICD-10-CM classifications closest to Q50.31 in its code family, with their registry titles.
- Q50 — Congenital malformations of ovaries, fallopian tubes and broad ligaments
- Q50-Q56 — Congenital malformations of genital organs (Q50-Q56)
- Q50.0 — Congenital absence of ovary
- Q50.01 — Congenital absence of ovary, unilateral
- Q50.02 — Congenital absence of ovary, bilateral
- Q50.1 — Developmental ovarian cyst
- Q50.2 — Congenital torsion of ovary
- Q50.3 — Other congenital malformations of ovary
- Q50.32 — Ovarian streak
- Q50.39 — Other congenital malformation of ovary
View all 13 codes in the Q50 family
Indexed Clinical Terms (2)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- Accessory (congenital), ovary
- Supernumerary (congenital), ovary