ICDcodes.org
FY2027

Q84.1 — Congenital morphological disturbances of hair, not elsewhere classified

BillableUnspecified

Is Q84.1 billable?

Yes, but Q84.1 is an unspecified code. Q84.1 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, Q84.1 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 Q84.1 — the more specific alternatives are listed below.

Q84.1 at a glance

CodeQ84.1
DescriptionCongenital morphological disturbances of hair, not elsewhere classified
BillableYes
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Which MS-DRGs does Q84.1 group to?

Q84.1 sits in MDC 09 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.

  • 606Minor Skin Disorders with MCCmedical
  • 607Minor Skin Disorders without MCCmedical

How is Q84.1 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to Q84.1. They show the wording a clinician may have documented, which often differs from the Tabular description.

  • Beaded hair (congenital)
  • Monilethrix (congenital)
  • Ringed hair (congenital)
  • Thrix annulata (congenital)
  • Trichostasis spinulosa (congenital)
  • Woolly, wooly hair (congenital) (nevus)
  • Pili › annulati or torti
  • Twist, twisted › hair

Excludes1 — never code together

The conditions below can never be reported together with Q84.1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • Menkes' kinky hair syndrome (E83.09)

Inclusion terms

Alternative wording in documentation that is classified to Q84.1.

  • Beaded hair
  • Monilethrix
  • Pili annulati

Excludes2 — not included here — inherited from Chapter 17

The conditions below are not part of Q84.1, but a patient may have both at the same time. When documentation supports it, Q84.1 and the excluded code may both be reported.

  • inborn errors of metabolism (E70-E88)

How long has Q84.1 existed?

Q84.1 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.

Which codes are confused with Q84.1?

ICD-10-CM declares these codes mutually exclusive with Q84.1 — exactly one of each pair can be correct for a given encounter.

What other codes are in the Q84 family? (8)