ICD-10 Code for Maldescended Testis

The ICD-10-CM code for maldescended Testis is Q53.9 — Undescended testicle, unspecified. This is the code the Alphabetic Index gives for maldescended Testis with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).

BillableUnspecified

Q53.9 is billable but unspecified. If the documentation names a type, site or cause, one of the more specific codes below is likely expected.

Which maldescended Testis code should you use?

The Alphabetic Index lists 7 codes under Maldescent, testis. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.

By type

bilateralQ53.20Undescended testicle, unspecified, bilateral
unilateralQ53.10Unspecified undescended testicle, unilateral

Maldescended Testis bilateral

abdominalQ53.211Bilateral intraabdominal testes
perinealQ53.22Ectopic perineal testis, bilateral

Maldescended Testis unilateral

abdominalQ53.111Unilateral intraabdominal testis
perinealQ53.12Ectopic perineal testis, unilateral

Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources