Instructor’s Guide for ICD-9-CM Diagnostic Coding and ...

Sep 27, 2017 · Stage 1 Pre-Ulcer: Characterized by unbroken skin surface. An area of induration, erythema, or blue/black discoloration of the skin that does not fade within 30 minutes after pressure has been removed. Stage 2 Ulcer: Moist, irregular, partial-thickness ulceration limited to the superficial epidermal and dermal layers. ................
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