-- L89.10 Pressure ulcer of unspecified part of back

--- L89.100 Pressure ulcer of unspecified part of back, unstageable

--- L89.101 Pressure ulcer of unspecified part of back, stage 1

--- L89.102 Pressure ulcer of unspecified part of back, stage 2

--- L89.103 Pressure ulcer of unspecified part of back, stage 3

--- L89.104 Pressure ulcer of unspecified part of back, stage 4

--- L89.106 Pressure-induced deep tissue damage of unspecified part of back

--- L89.109 Pressure ulcer of unspecified part of back, unspecified stage

-- L89.11 Pressure ulcer of right upper back

--- L89.110 Pressure ulcer of right upper back, unstageable

--- L89.111 Pressure ulcer of right upper back, stage 1

--- L89.112 Pressure ulcer of right upper back, stage 2

--- L89.113 Pressure ulcer of right upper back, stage 3

--- L89.114 Pressure ulcer of right upper back, stage 4

--- L89.116 Pressure-induced deep tissue damage of right upper back

--- L89.119 Pressure ulcer of right upper back, unspecified stage

-- L89.12 Pressure ulcer of left upper back

--- L89.120 Pressure ulcer of left upper back, unstageable

--- L89.121 Pressure ulcer of left upper back, stage 1

--- L89.122 Pressure ulcer of left upper back, stage 2

--- L89.123 Pressure ulcer of left upper back, stage 3

--- L89.124 Pressure ulcer of left upper back, stage 4

--- L89.126 Pressure-induced deep tissue damage of left upper back

--- L89.129 Pressure ulcer of left upper back, unspecified stage

-- L89.13 Pressure ulcer of right lower back

--- L89.130 Pressure ulcer of right lower back, unstageable

--- L89.131 Pressure ulcer of right lower back, stage 1

--- L89.132 Pressure ulcer of right lower back, stage 2

--- L89.133 Pressure ulcer of right lower back, stage 3

--- L89.134 Pressure ulcer of right lower back, stage 4

--- L89.136 Pressure-induced deep tissue damage of right lower back

--- L89.139 Pressure ulcer of right lower back, unspecified stage

-- L89.14 Pressure ulcer of left lower back

--- L89.140 Pressure ulcer of left lower back, unstageable

--- L89.141 Pressure ulcer of left lower back, stage 1

--- L89.142 Pressure ulcer of left lower back, stage 2

--- L89.143 Pressure ulcer of left lower back, stage 3

--- L89.144 Pressure ulcer of left lower back, stage 4

--- L89.146 Pressure-induced deep tissue damage of left lower back

--- L89.149 Pressure ulcer of left lower back, unspecified stage

-- L89.15 Pressure ulcer of sacral region

--- L89.150 Pressure ulcer of sacral region, unstageable

--- L89.151 Pressure ulcer of sacral region, stage 1

--- L89.152 Pressure ulcer of sacral region, stage 2

--- L89.153 Pressure ulcer of sacral region, stage 3

--- L89.154 Pressure ulcer of sacral region, stage 4

--- L89.156 Pressure-induced deep tissue damage of sacral region

--- L89.159 Pressure ulcer of sacral region, unspecified stage