Diagnosis Code


Code Information

Diagnosis Code: L66.3

Short Description: Perifolliculitis capitis abscedens

Long Description: Perifolliculitis capitis abscedens

The code L66.3 is VALID for claim submission

Code Classification:

  • Diseases of the skin and subcutaneous tissue (L00–L99)
    • Disorders of skin appendages (L60-L75)
      • Cicatricial alopecia [scarring hair loss] (L66)
        • L66.3 Perifolliculitis capitis abscedens

Code Version: 2020 ICD-10-CM


  • Follicular occlusion tetrad - hidradenitis, acne conglobata, dissecting cellulitis, pilonidal sinus
  • Follicular occlusion triad - hidradenitis, acne conglobata, dissecting cellulitis of scalp
  • Hidradenitis
  • Hidradenitis
  • Hidradenitis suppurativa
  • Hidradenitis suppurativa
  • Perifolliculitis
  • Perifolliculitis capitis abscedens
  • Perifolliculitis capitis abscedens et suffodiens
  • Scalp folliculitis

Diagnostic Related Group(s)

The code L66.3 is grouped in the following Diagnostic Related Group(s) (MS-DRG v37.0)
  • Minor Skin Disorders With Mcc (606)
  • Minor Skin Disorders Without Mcc (607)

Crosswalk Information

ICD-10 Code ICD-9 Code ICD-9 Description
L66.3 Right Arrow 704.8 Hair diseases NEC

This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code ICD-10 Description
L66 Cicatricial alopecia [scarring hair loss]
L66.0 Pseudopelade
L66.1 Lichen planopilaris
L66.2 Folliculitis decalvans
L66.4 Folliculitis ulerythematosa reticulata
L66.8 Other cicatricial alopecia
L66.9 Cicatricial alopecia, unspecified

This page was last updated on: 10/1/2019