L66.3 ICD-10-CA code: Perifolliculitis capitis abscedens
L66.3 is the ICD-10-CA code for “Perifolliculitis capitis abscedens” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
L66.3Perifolliculitis capitis abscedens
ICD-10-CA · Canada · Also written L663
Index terms
Entries in CIHI’s alphabetical index that lead to L66.3. Searching the index by the condition the note names is how coders reach this code.
- Folliculitis, abscedens et suffodiens
- Perifolliculitis, capitis abscedens (et suffodiens)
Notes for L66.3
As CIHI prints them, with any note L66.3 takes from the headings above it.
Excludes
Conditions classified elsewhere.
- Dissecting cellulitis of the scalp (L03.8)
- Congenital malformations of integument (Q84.-)From L60-L75 Disorders of skin appendages
- Certain:• conditions originating in the perinatal period (P00-P96)• infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)lipomelanotic reticulosis (I89.8)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)systemic connective tissue disorders (M30-M36)From Chapter 12: Diseases of the skin and subcutaneous tissue (L00-L99)
Where L66.3 sits
- 1ChapterChapter 12: Diseases of the skin and subcutaneous tissue (L00-L99)
- 2Block L60-L75Disorders of skin appendages
- 3Category L66Cicatricial alopecia [scarring hair loss]
- 4Valid code L66.3Perifolliculitis capitis abscedens
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code L66.3 mean?
L66.3 is the ICD-10-CA code for “Perifolliculitis capitis abscedens” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is L66.3 in ICD-10-CA?
L66.3 sits under L66 Cicatricial alopecia [scarring hair loss], within L60-L75 Disorders of skin appendages, within Chapter 12: Diseases of the skin and subcutaneous tissue (L00-L99).
What coding notes apply to L66.3?
ICD-10-CA lists Excludes notes for L66.3, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.