707: Chronic ulcer of skin
Includes:
non-infected sinus of skin
non-healing ulcer
Excludes:
varicose ulcer (454.0, 454.2)
707.2 Pressure ulcer stages
Code first site of pressure ulcer (707.00-707.09)
Healing pressure ulcer NOS
Healing pressure ulcer, unspecified stage
Healing pressure ulcer, stage I
Pressure pre-ulcer skin changes limited to persistent focal erythema
Healing pressure ulcer, stage II
Pressure ulcer with abrasion, blister, partial thickness skin loss involving epidermis and/or dermis
Healing pressure ulcer, stage III
Pressure ulcer with full thickness skin loss involving damage or necrosis of subcutaneous tissue
Healing pressure ulcer, stage IV
Pressure ulcer with necrosis of soft tissues through to underlying muscle, tendon, or bone

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