ICDcodes.org
FY2027

Q55.9 — Congenital malformation of male genital organ, unspecified

BillableUnspecified

Is Q55.9 billable?

Yes, but Q55.9 is an unspecified code. Q55.9 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, Q55.9 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting Q55.9 — the more specific alternatives are listed below.

Q55.9 at a glance

CodeQ55.9
DescriptionCongenital malformation of male genital organ, unspecified
BillableYes
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Which MS-DRGs does Q55.9 group to?

Q55.9 sits in MDC 12 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

  • 729Other Male Reproductive System Diagnoses with CC/MCCmedical
  • 730Other Male Reproductive System Diagnoses without CC/MCCmedical

How is Q55.9 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to Q55.9. They show the wording a clinician may have documented, which often differs from the Tabular description.

  • Anomaly, anomalous › genitalia, genital organor system › male (congenital) (unspecified type)
  • Anomaly, anomalous › genitourinary NEC › male (congenital) (unspecified type)
  • Deformity › genitalia, genital organor system NEC › male

Inclusion terms

Alternative wording in documentation that is classified to Q55.9.

  • Congenital anomaly of male genital organ
  • Congenital deformity of male genital organ

Excludes1 — never code together — inherited from Q50-Q56

The conditions below can never be reported together with Q55.9 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

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

Excludes1 — never code together — inherited from Q55

The conditions below can never be reported together with Q55.9 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

Excludes2 — not included here — inherited from Chapter 17

The conditions below are not part of Q55.9, but a patient may have both at the same time. When documentation supports it, Q55.9 and the excluded code may both be reported.

  • inborn errors of metabolism (E70-E88)

How long has Q55.9 existed?

Q55.9 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.

What other codes are in the Q55 family? (9)