2020 ICD-10-CM Diagnosis Code L05

Pilonidal cyst and sinus

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • L05 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM L05 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of L05 - other international versions of ICD-10 L05 may differ.
The following code(s) above L05 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to L05:
  • L00-L99
    2020 ICD-10-CM Range L00-L99

    Diseases of the skin and subcutaneous tissue

    Type 2 Excludes
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • lipomelanotic reticulosis (I89.8)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    • systemic connective tissue disorders (M30-M36)
    • viral warts (B07.-)
    Diseases of the skin and subcutaneous tissue
  • L00-L08
    2020 ICD-10-CM Range L00-L08

    Infections of the skin and subcutaneous tissue

    Type 2 Excludes
    • hordeolum (H00.0)
    • infective dermatitis (L30.3)
    • local infections of skin classified in Chapter 1
    • lupus panniculitis (L93.2)
    • panniculitis NOS (M79.3)
    • panniculitis of neck and back (M54.0-)
    • Perlèche NOS (K13.0)
    • Perlèche due to candidiasis (B37.0)
    • Perlèche due to riboflavin deficiency (E53.0)
    • pyogenic granuloma (L98.0)
    • relapsing panniculitis [Weber-Christian] (M35.6)
    • viral warts (B07.-)
    • zoster (B02.-)
    Use Additional
    • code (B95-B97) to identify infectious agent.
    Infections of the skin and subcutaneous tissue
Clinical Information
  • A hair-containing cyst or sinus, occurring chiefly in the coccygeal region.
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
Code annotations containing back-references to L05:
  • Type 1 Excludes: Q43.6
    , Q82
    ICD-10-CM Diagnosis Code Q43.6

    Congenital fistula of rectum and anus

      2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
    Type 1 Excludes
    • congenital fistula of anus with absence, atresia and stenosis (Q42.2)
    • congenital fistula of rectum with absence, atresia and stenosis (Q42.0)
    • congenital rectovaginal fistula (Q52.2)
    • congenital urethrorectal fistula (Q64.73)
    • pilonidal fistula or sinus (L05.-)
    ICD-10-CM Diagnosis Code Q82

    Other congenital malformations of skin

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • acrodermatitis enteropathica (E83.2)
    • congenital erythropoietic porphyria (E80.0)
    • pilonidal cyst or sinus (L05.-)
    • Sturge-Weber (-Dimitri) syndrome (Q85.8)
ICD-10-CM Codes Adjacent To L05
L03.9 Cellulitis and acute lymphangitis, unspecified
L03.90 Cellulitis, unspecified
L03.91 Acute lymphangitis, unspecified
L04 Acute lymphadenitis
L04.0 Acute lymphadenitis of face, head and neck
L04.1 Acute lymphadenitis of trunk
L04.2 Acute lymphadenitis of upper limb
L04.3 Acute lymphadenitis of lower limb
L04.8 Acute lymphadenitis of other sites
L04.9 Acute lymphadenitis, unspecified
L05 Pilonidal cyst and sinus
L05.0 Pilonidal cyst and sinus with abscess
L05.01 Pilonidal cyst with abscess
L05.02 Pilonidal sinus with abscess
L05.9 Pilonidal cyst and sinus without abscess
L05.91 Pilonidal cyst without abscess
L05.92 Pilonidal sinus without abscess
L08 Other local infections of skin and subcutaneous tissue
L08.0 Pyoderma
L08.1 Erythrasma
L08.8 Other specified local infections of the skin and subcutaneous tissue

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.