A hospital-acquired condition (HAC) is an undesirable situation or condition that affects a patient and that arose during a stay in a hospital or medical facility. CMS has identified 14 categories of HACs for which it will not pay the higher DRG rate if the condition was not present on admission (POA). One of these categories is stage III and IV pressure ulcers. A pressure ulcer is damage to the skin and underlying tissue caused by prolonged pressure on the skin. Stage III pressure ulcers involve full-thickness skin loss with damage or necrosis of subcutaneous tissue that may extend down to, but not through, underlying fascia. The ulcer presents as a deep crater with or without undermining of adjacent tissue.

A. Iatrogenic pneumothorax with lung biopsy is not a HAC, because it is not included in the CMS HAC list. Iatrogenic pneumothorax is a HAC only when it occurs with venous catheterization.

B. Iatrogenic pneumothorax with venous catheterization is a HAC, but it may be present on admission if the venous catheterization was performed before the admission to the hospital.

C. Pressure ulcer stage II is not a HAC, because only stage III and IV pressure ulcers are included in the CMS HAC list. Stage II pressure ulcers involve partial-thickness skin loss involving epidermis, dermis, or both. The ulcer is superficial and presents clinically as an abrasion, blister, or shallow crater.

References:

CDIP Exam Preparation Guide, 2021 Edition. AHIMA Press. ISBN: 9781584268530

Hospital Acquired Conditions | CMS

ICD-10 HAC List | CMS

Bedsores (pressure ulcers) - Symptoms and causes - Mayo Clinic