Other disorders of skin and subcutaneous tissue in diseases classified elsewhere (L99)
Instructional Notations
Code First
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
- underlying disease, such as:
- amyloidosis E85
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- skin disorders in diabetes E08 E13
- skin disorders in gonorrhea A54.89
- skin disorders in syphilis A51.31 A52.79
Diseases of the skin and subcutaneous tissue (L00–L99)
Other disorders of the skin and subcutaneous tissue (L80-L99)
- L99 Other disorders of skin and subcutaneous tissue in diseases classified elsewhere
Other disorders of skin and subcutaneous tissue in diseases classified elsewhere (L99)