Alphabetic Index FY2027

Q53.10

Unspecified undescended testicle, unilateral

FY2027Chapter 17: Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders/Q50–Q56 Congenital malformations of genital organs

BillableComplete code, valid to report

Q53.10 (also written Q5310) is a billable ICD-10-CM diagnosis code for unspecified undescended testicle, unilateral. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 14 codes in category Q53 (Undescended and ectopic testicle). The Alphabetic Index lists it under 3 entries. Its coding notes include 2 Excludes1 entries and 1 Excludes2 entry.

Guidelines tip

From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.

Chapter 17 codes can be used for life. Manifestations that are an inherent part of a specifically coded anomaly are not coded separately. A corrected malformation is reported with a personal history code.

Guidelines I.C.17Congenital malformations and genetic disordersRead the official text

Excludes1

Not coded here. The listed conditions generally should not be reported together.

Also from chapter/block level (2 notes)
Inherited from Q50–Q56 Congenital malformations of genital organs
  • androgen insensitivity syndrome (E34.5-)
  • syndromes associated with anomalies in the number and form of chromosomes (Q90-Q99)

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Also from chapter/block level (1 note)
Inherited from Chapter 17 Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders
  • inborn errors of metabolism (E70-E88)

Notes

Also from chapter/block level (1 note)
Inherited from Chapter 17 Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders
  • Codes from this chapter are not for use on maternal records

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 3 entries