Percentage of Stage 2, 3, or 4 pressure ulcers* (not on the lower extremity) among patients aged 18 or older that achieve healing or closure within 6 months, stratified by the Wound Healing Index (WHI). Healing or closure may occur by delayed secondary intention or may be the result of surgical intervention (e.g., rotational flap or skin graft). Lower extremity pressure ulcers are not included in this measure because they commonly overlap with arterial and diabetic foot ulcers and require a separate risk stratification model. [Note: The National Pressure Injury Advisory Panel (NPIA) (formerly the NPUAP) has renamed pressure ulcers “pressure injuries,” but the ICD-10-CM continues to use the term pressure “ulcers”. This measure is limited to open defects (stages 2, 3, 4) which heal by secondary intention or surgical closure, typically referred to as ulcers. We have chosen to use the ICD10 terminology of "ulcers".]