Q53.1 – Undescended testicle, unilateral

ICD-10-CM 2027 diagnosis code · Congenital malformations of genital organs

Non-billable header

ICD-10-CM code Q53.1

Code: Q53.1 (claims format: Q531)
Description: Undescended testicle, unilateral
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 17. Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1)
Block: Q50-Q56 Congenital malformations of genital organs
Parent codes: Q53

Billable codes under Q53.1

Q53.1 is a header code and cannot be used on claims. Choose the most specific code:

Q53.10 – Unspecified undescended testicle, unilateralBillable
Q53.11 – Abdominal testis, unilateralHeader (more codes below)
Q53.12 – Ectopic perineal testis, unilateralBillable
Q53.13 – Unilateral high scrotal testisBillable

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Block Q50-Q56

Excludes1 (not coded here):

androgen insensitivity syndrome (E34.5-)
syndromes associated with anomalies in the number and form of chromosomes (Q90-Q99)

Related codes in Q53

Q53.0 – Ectopic testisHeader
Q53.2 – Undescended testicle, bilateralHeader
Q53.9 – Undescended testicle, unspecifiedBillable

Frequently asked questions

What is ICD-10 code Q53.1?

Q53.1 is the ICD-10-CM code for undescended testicle, unilateral, in the block Q50-Q56 (Congenital malformations of genital organs).

Is Q53.1 a billable code?

No. Q53.1 is a header code with more specific child codes; report one of the billable codes listed above.

What category does Q53.1 belong to?

It belongs to category Q53 – Undescended and ectopic testicle.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.