Q55.64Hidden penis

Q55.64 is the ICD-10-CM diagnosis code for Hidden penis. It belongs to category Q55 (other congenital malformations of male genital organs), block Q50-Q56 (congenital malformations of genital organs) and chapter 17 (congenital malformations, deformations, chromosomal abnormalities, and genetic disorders). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within Q55.6 (other congenital malformations of penis), Q55.64 is specifically for Hidden penis. Related codes cover curvature of penis (lateral) (Q55.61), hypoplasia of penis (Q55.62), congenital torsion of penis (Q55.63) and other congenital malformation of penis (Q55.69).

Don't report Q55.64 together with the conditions in its Excludes1 note: acquired buried penis (N48.83).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 729 (Other Male Reproductive System Diagnoses with CC/MCC, relative weight 1.0544) and DRG 730 (Other Male Reproductive System Diagnoses without CC/MCC, relative weight 0.6597), in MDC 12 (Diseases and Disorders of the Male Reproductive System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It is on the CMS list of diagnoses consistent only with male patients (the sex-conflict edit itself was retired in FY2025).

It is exempt from present-on-admission (POA) reporting, so no POA indicator is required.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 752.65 (Hidden penis).