Coding and coverage · ICD-10-CM

Q82

Q82.2 Congenital cutaneous mastocytosis

BillableNo payment HCCChapter 17
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Instructional notes

Chapter 17

Excludes2Not included here: the patient may have both; report both when both are present.
  • inborn errors of metabolism (E70-E88)
Notes
  • Codes from this chapter are not for use on maternal records

Q82

Excludes1Not coded here: never report with this code, except when the two conditions are unrelated.
  • acrodermatitis enteropathica (E83.2)
  • congenital erythropoietic porphyria (E80.0)
  • pilonidal cyst or sinus (L05.-)
  • Sturge-Weber (-Dimitri) syndrome (Q85.89)

This code

Excludes1Not coded here: never report with this code, except when the two conditions are unrelated.
  • cutaneous mastocytosis NOS (D47.01)
  • diffuse cutaneous mastocytosis (with onset after newborn period) (D47.01)
  • malignant mastocytosis (C96.2-)
  • systemic mastocytosis (D47.02)
  • urticaria pigmentosa (non-congenital) (with onset after newborn period) (D47.01)
Inclusion terms
  • Congenital diffuse cutaneous mastocytosis
  • Congenital maculopapular cutaneous mastocytosis
  • Congenital urticaria pigmentosa

Chapter 17: Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1) · Q80-Q89 Other congenital malformations (Q80-Q89)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.