2020 ICD-10-CM Diagnosis Code L52

Erythema nodosum

    2016 2017 2018 2019 2020 Billable/Specific Code
  • L52 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM L52 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of L52 - other international versions of ICD-10 L52 may differ.
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as L52. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • tuberculous erythema nodosum (
    ICD-10-CM Diagnosis Code A18.4

    Tuberculosis of skin and subcutaneous tissue

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Erythema induratum, tuberculous
    • Lupus excedens
    • Lupus vulgaris NOS
    • Lupus vulgaris of eyelid
    • Scrofuloderma
    • Tuberculosis of external ear
    Type 2 Excludes
    • lupus erythematosus (L93.-)
    • systemic lupus erythematosus (M32.-)
    A18.4
    )
The following code(s) above L52 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 L52:
  • 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
  • L49-L54
    2020 ICD-10-CM Range L49-L54

    Urticaria and erythema

    Type 1 Excludes
    Urticaria and erythema
Clinical Information
  • An erythematous eruption commonly associated with drug reactions or infection and characterized by inflammatory nodules that are usually tender, multiple, and bilateral. These nodules are located predominantly on the shins with less common occurrence on the thighs and forearms. They undergo characteristic color changes ending in temporary bruise-like areas. This condition usually subsides in 3-6 weeks without scarring or atrophy.
  • Erythematous eruption commonly associated with drug reactions or infection and characterized by inflammatory nodules that are usually tender, multiple, and bilateral; these nodules are located predominantly on the shins with less common occurrence on the thighs and forearms; they undergo characteristic color changes ending in temporary bruise-like areas; this condition usually subsides in 3-6 weeks without scarring or atrophy.
ICD-10-CM L52 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 595 Major skin disorders with mcc
  • 596 Major skin disorders without mcc

Convert L52 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
Code annotations containing back-references to L52:
  • Code First: M14.8
    ICD-10-CM Diagnosis Code M14.8

    Arthropathies in other specified diseases classified elsewhere

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Code First
    • underlying disease, such as:
    • amyloidosis (E85.-)
    • erythema multiforme (L51.-)
    • erythema nodosum (L52)
    • hemochromatosis (E83.11-)
    • hyperparathyroidism (E21.-)
    • hypothyroidism (E00-E03)
    • sickle-cell disorders (D57.-)
    • thyrotoxicosis [hyperthyroidism] (E05.-)
    • Whipple's disease (K90.81)

Diagnosis Index entries containing back-references to L52:
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute) M19.90
    ICD-10-CM Diagnosis Code M19.90

    Unspecified osteoarthritis, unspecified site

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Arthrosis NOS
    • Arthritis NOS
    • Osteoarthritis NOS
  • Arthropathy M12.9
    - see also Arthritis
    ICD-10-CM Diagnosis Code M12.9

    Arthropathy, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
  • Dermatitis (eczematous) L30.9
    ICD-10-CM Diagnosis Code L30.9

    Dermatitis, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Eczema NOS
    • contusiformis L52
  • Erythema, erythematous (infectional) (inflammation) L53.9
    ICD-10-CM Diagnosis Code L53.9

    Erythematous condition, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Erythema NOS
    • Erythroderma NOS

ICD-10-CM Codes Adjacent To L52
L50.6 Contact urticaria
L50.8 Other urticaria
L50.9 Urticaria, unspecified
L51 Erythema multiforme
L51.0 Nonbullous erythema multiforme
L51.1 Stevens-Johnson syndrome
L51.2 Toxic epidermal necrolysis [Lyell]
L51.3 Stevens-Johnson syndrome-toxic epidermal necrolysis overlap syndrome
L51.8 Other erythema multiforme
L51.9 Erythema multiforme, unspecified
L52 Erythema nodosum
L53 Other erythematous conditions
L53.0 Toxic erythema
L53.1 Erythema annulare centrifugum
L53.2 Erythema marginatum
L53.3 Other chronic figurate erythema
L53.8 Other specified erythematous conditions
L53.9 Erythematous condition, unspecified
L54 Erythema in diseases classified elsewhere
L55 Sunburn
L55.0 Sunburn of first degree

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