L97Non-pressure chronic ulcer of lower limb, not elsewhere classified

L97 is the ICD-10-CM diagnosis code for Non-pressure chronic ulcer of lower limb, not elsewhere classified. 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 7 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: L97.1 (thigh), L97.2 (calf), L97.3 (ankle), L97.4 (midfoot), L97.5 (foot), L97.8 (leg) and L97.9 (leg).

The conditions in its Excludes2 note aren't part of L97, but may be coded alongside it if the patient has both: pressure ulcer (pressure area) (L89.-), skin infections (L00-L08) and specific infections classified to A00-B99.

Code first any associated underlying condition, such as: any associated gangrene (I96), atherosclerosis of the lower extremities (I70.23-, I70.24-, I70.33-, I70.34-, I70.43-, I70.44-, I70.53-, I70.54-, I70.63-, I70.64-, I70.73-, I70.74-), chronic venous hypertension (I87.31-, I87.33-), diabetic ulcers (E08.621, E08.622, E09.621, E09.622, E10.621, E10.622, E11.621, E11.622, E13.621, E13.622) and 3 more.

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