Diseases of the skin and subcutaneous tissue
Dermatitis and eczema
2018 ICD-10-CM Diagnosis Code L21
2016 2017 2018 Non-Billable/Non-Specific Code
- L21 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
- The 2018 edition of ICD-10-CM L21 became effective on October 1, 2017.
- This is the American ICD-10-CM version of L21 - other international versions of ICD-10 L21 may differ.
Type 2 Excludes
Type 2 Excludes Help
A type 2 excludes note represents "not included here". A type 2 excludes note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When a type 2 excludes note appears under a code it is acceptable to use both the code (L21) and the excluded code together.
The following code(s) above L21
contain 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 L21
- A chronic inflammatory disease of the skin with unknown etiology. It is characterized by moderate erythema, dry, moist, or greasy (sebaceous gland) scaling and yellow crusted patches on various areas, especially the scalp, that exfoliate as dandruff. Seborrheic dermatitis is common in children and adolescents with hiv infections.
- A kind of skin disorder affecting the scalp, face, and trunk causing scaly, flaky, itchy, red skin
- 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
Code annotations containing back-references to L21:
ICD-10-CM Codes Adjacent To L21
Bullous disorders in diseases classified elsewhere
Other atopic dermatitis
Infantile (acute) (chronic) eczema
Intrinsic (allergic) eczema
Other atopic dermatitis
Atopic dermatitis, unspecified
Seborrheic infantile dermatitis
Other seborrheic dermatitis
Seborrheic dermatitis, unspecified
Allergic contact dermatitis
Allergic contact dermatitis due to metals
Allergic contact dermatitis due to adhesives
Allergic contact dermatitis due to cosmetics
Allergic contact dermatitis due to drugs in contact with skin
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.