L97.30Non-pressure chronic ulcer of unspecified ankle

L97.30 is the ICD-10-CM diagnosis code for Non-pressure chronic ulcer of unspecified ankle. It belongs to category L97 (Non-pressure chronic ulcer of lower limb, not elsewhere classified), 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 8 subcodes must be used instead.

Within L97.3, choose L97.30 (unspecified ankle) only when documentation doesn't support a more specific option: right ankle (L97.31) and left ankle (L97.32).

To report this condition, pick the subcode that matches the documentation: L97.301 (limited to breakdown of skin), L97.302 (with fat layer exposed), L97.303 (with necrosis of muscle), L97.304 (with necrosis of bone), L97.305 (with muscle involvement without evidence of necrosis), L97.306 (with bone involvement without evidence of necrosis), L97.308 (with other specified severity) and L97.309 (with unspecified severity).

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.