2019 ICD-10-CM Diagnosis Code L40.1

Generalized pustular psoriasis

    2016 2017 2018 2019 Billable/Specific Code
  • L40.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2019 edition of ICD-10-CM L40.1 became effective on October 1, 2018.
  • This is the American ICD-10-CM version of L40.1 - other international versions of ICD-10 L40.1 may differ.
Applicable To
  • Impetigo herpetiformis
  • Von Zumbusch's disease
The following code(s) above L40.1 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 L40.1:
  • L00-L99
    2019 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
Approximate Synonyms
  • Impetigo herpetiformis
ICD-10-CM L40.1 is grouped within Diagnostic Related Group(s) (MS-DRG v36.0):
  • 606 Minor skin disorders with mcc
  • 607 Minor skin disorders without mcc

Convert L40.1 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
Code annotations containing back-references to L40.1:
  • Type 1 Excludes: L01
    , L12
    ICD-10-CM Diagnosis Code L01

    Impetigo

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • impetigo herpetiformis (L40.1)
    ICD-10-CM Diagnosis Code L12

    Pemphigoid

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • herpes gestationis (O26.4-)
    • impetigo herpetiformis (L40.1)

Diagnosis Index entries containing back-references to L40.1:
  • Impetigo (any organism) (any site) (circinate) (contagiosa) (simplex) (vulgaris) L01.00
    ICD-10-CM Diagnosis Code L01.00

    Impetigo, unspecified

      2016 2017 2018 2019 Billable/Specific Code
    Applicable To
    • Impetigo NOS
  • Psoriasis L40.9
    ICD-10-CM Diagnosis Code L40.9

    Psoriasis, unspecified

      2016 2017 2018 2019 Billable/Specific Code
  • Von Zumbusch's disease L40.1

ICD-10-CM Codes Adjacent To L40.1
L30.0 Nummular dermatitis
L30.1 Dyshidrosis [pompholyx]
L30.2 Cutaneous autosensitization
L30.3 Infective dermatitis
L30.4 Erythema intertrigo
L30.5 Pityriasis alba
L30.8 Other specified dermatitis
L30.9 Dermatitis, unspecified
L40 Psoriasis
L40.0 Psoriasis vulgaris
L40.1 Generalized pustular psoriasis
L40.2 Acrodermatitis continua
L40.3 Pustulosis palmaris et plantaris
L40.4 Guttate psoriasis
L40.5 Arthropathic psoriasis
L40.50 …… unspecified
L40.51 Distal interphalangeal psoriatic arthropathy
L40.52 Psoriatic arthritis mutilans
L40.53 Psoriatic spondylitis
L40.54 Psoriatic juvenile arthropathy
L40.59 Other psoriatic arthropathy

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