L89.10Pressure ulcer of unspecified part of back

L89.10 is the ICD-10-CM diagnosis code for pressure ulcer of unspecified part of back. It belongs to category L89 (pressure ulcer), 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.

Within L89.1, choose L89.10 (unspecified part of back) only when documentation doesn't support a more specific option: right upper back (L89.11), left upper back (L89.12), right lower back (L89.13), left lower back (L89.14) and sacral region (L89.15).

To report this condition, pick the subcode that matches the documentation: L89.100 (unstageable), L89.101 (stage 1), L89.102 (stage 2), L89.103 (stage 3), L89.104 (stage 4), L89.106 (back) and L89.109 (unspecified stage).

Code first: any associated gangrene (I96).

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