ICD-10 Code for Dermatosis

The default ICD-10-CM 2027 code for dermatosis is L98.9 – Disorder of the skin and subcutaneous tissue, unspecified. More specific codes depend on the details documented, as listed in the official index (18 codes, 18 billable).

Main code: L98.9 – Disorder of the skin and subcutaneous tissue, unspecified
Billable: Yes

Index entries for Dermatosis

Andrews' – L08.89
Bowen's – see Neoplasm, skin, in situ
bullous – L13.9
- specified NEC – L13.8
exfoliativa – L26
eyelid (noninfectious) – H01.9 – see also Dermatitis, eyelid
- discoid lupus erythematosus – see Lupus, erythematosus, eyelid
- xeroderma – see Xeroderma, acquired, eyelid
factitial – L98.1
febrile neutrophilic – L98.2
gonococcal – A54.89
herpetiformis – L13.0
- juvenile – L12.2
linear IgA – L13.8
menstrual NEC – L98.8
neutrophilic, febrile – L98.2
occupational – see Dermatitis, contact
papulosa nigra – L82.1
pigmentary – L81.9
- progressive – L81.7
- Schamberg's – L81.7
psychogenic – F54
purpuric, pigmented – L81.7
pustular, subcorneal – L13.1
transient acantholytic – L11.1

How to choose the right code

Start with the main term, then pick the indented subterm that matches the documentation (type, cause, site, laterality, episode of care). Always confirm the code in the tabular list: follow its Excludes1/Excludes2, “code first” and “use additional code” notes, and add a 7th character where required.

Source: CDC/NCHS ICD-10-CM FY2027 alphabetic index.