2021 ICD-10-CM Diagnosis Code L41.9

Parapsoriasis, unspecified

    2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • L41.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2021 edition of ICD-10-CM L41.9 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of L41.9 - other international versions of ICD-10 L41.9 may differ.
The following code(s) above L41.9 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 L41.9:
  • L00-L99
    2021 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
  • L41
    ICD-10-CM Diagnosis Code L41

    Parapsoriasis

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • poikiloderma vasculare atrophicans (L94.5)
    Parapsoriasis
Approximate Synonyms
  • Parapsoriasis
Clinical Information
  • An inflammatory skin disorder of unknown etiology characterized by papules and plaques or scaly patches resembling psoriasis.
  • The term applied to a group of relatively uncommon inflammatory, maculopapular, scaly eruptions of unknown etiology and resistant to conventional treatment. Eruptions are both psoriatic and lichenoid in appearance, but the diseases are distinct from psoriasis, lichen planus, or other recognized dermatoses. Proposed nomenclature divides parapsoriasis into two distinct subgroups, pityriasis lichenoides and parapsoriasis en plaques (small- and large-plaque parapsoriasis).
ICD-10-CM L41.9 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
  • 595 Major skin disorders with mcc
  • 596 Major skin disorders without mcc

Convert L41.9 to ICD-9-CM

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
  • 2021 (effective 10/1/2020): No change

Diagnosis Index entries containing back-references to L41.9:

ICD-10-CM Codes Adjacent To L41.9
L40.59 Other psoriatic arthropathy
L40.8 Other psoriasis
L40.9 Psoriasis, unspecified
L41 Parapsoriasis
L41.0 Pityriasis lichenoides et varioliformis acuta
L41.1 Pityriasis lichenoides chronica
L41.3 Small plaque parapsoriasis
L41.4 Large plaque parapsoriasis
L41.5 Retiform parapsoriasis
L41.8 Other parapsoriasis
L41.9 Parapsoriasis, unspecified
L42 Pityriasis rosea
L43 Lichen planus
L43.0 Hypertrophic lichen planus
L43.1 Bullous lichen planus
L43.2 Lichenoid drug reaction
L43.3 Subacute (active) lichen planus
L43.8 Other lichen planus
L43.9 Lichen planus, unspecified
L44 Other papulosquamous disorders
L44.0 Pityriasis rubra pilaris

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