ICD-10-CM 2027 diagnosis code

L85Other epidermal thickening

Not billable — use a more specific code

L85 is a header code, so it can't be reported by itself. Choose one of the 6 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About L85

L85 is the ICD-10-CM diagnosis code for other epidermal thickening. It belongs to block L80-L99 (other disorders of the skin and subcutaneous tissue) and chapter 12 (diseases of the skin and subcutaneous tissue). It is a header code, so it can't be reported by itself; one of its 6 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: L85.0 (ichthyosis), L85.1 (plantaris), L85.2 (plantaris)), L85.3 (cutis), L85.8 (thickening) and L85.9 (unspecified).

The conditions in its Excludes2 note aren't part of L85, but may be coded alongside it if the patient has both: hypertrophic disorders of the skin (L91.-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under L85

Coding notes

Excludes2Not included here — may be reported together if both conditions exist

hypertrophic disorders of the skin (L91.-)

Notes that apply from higher levels

Instructions written at a parent level also apply to L85.

Broader instructions also apply from Chapter 12: Diseases of the skin and subcutaneous tissue.

Code history

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2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about L85

Is L85 billable?: No. L85 is a header code. Report one of its more specific subcodes instead.