ICD-10 Diagnosis Code L66.3

Perifolliculitis capitis abscedens

Diagnosis Code L66.3

ICD-10: L66.3
Short Description: Perifolliculitis capitis abscedens
Long Description: Perifolliculitis capitis abscedens
This is the 2018 version of the ICD-10-CM diagnosis code L66.3

Valid for Submission
The code L66.3 is valid for submission for HIPAA-covered transactions.

Code Classification
  • Diseases of the skin and subcutaneous tissue (L00–L99)
    • Disorders of skin appendages (L60-L75)
      • Cicatricial alopecia [scarring hair loss] (L66)

Information for Medical Professionals

Diagnostic Related Groups
The diagnosis code L66.3 is grouped in the following Diagnostic Related Group(s) (MS-DRG V35.0)


Convert to ICD-9 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • 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

Information for Patients

Hair Loss

Also called: Alopecia

You lose up to 100 hairs from your scalp every day. That's normal, and in most people, those hairs grow back. But many men -- and some women -- lose hair as they grow older. You can also lose your hair if you have certain diseases, such as thyroid problems, diabetes, or lupus. If you take certain medicines or have chemotherapy for cancer, you may also lose your hair. Other causes are stress, a low protein diet, a family history, or poor nutrition.

Treatment for hair loss depends on the cause. In some cases, treating the underlying cause will correct the problem. Other treatments include medicines and hair restoration.

  • Alopecia areata (Medical Encyclopedia)
  • Coping with cancer -- hair loss (Medical Encyclopedia)
  • Female pattern baldness (Medical Encyclopedia)
  • Hair loss (Medical Encyclopedia)
  • Hair transplant (Medical Encyclopedia)
  • Male pattern baldness (Medical Encyclopedia)
  • Trichotillomania (Medical Encyclopedia)

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