PEDIS Classification

The PEDIS clasification is a faceted classification that provides a taxonomy for classifying lesions in patients with diabetic foot syndrome.

Every lesion is described according to the following scheme:

• Perfusion
  • Grade 1: no symptoms/signs of PAD
  • Grade 2: symptoms or signs of PAD, but not CLI
  • Grade 3: CLI

• Extent/size (cm^2)

• Depth/tissue loss
  • Grade 1: Superficial full-thickness ulcer
  • Grade 2: Ulcer penetrating below dermis to skin structures
  • Grade 3: All subsequent layers of foot, including bone/joint

• Infection
  • Grade 1: no symptoms/signs
  • Grade 2: Inflammation of skin/sc only
  • Grade 3: Extensive erythema deeper than skin/sc
  • Grade 4: Systemic inflammatory response syndrome (SIRS)

• Sensation
  • Grade 1: No loss of protective sensation
  • Grade 2: Loss of protective sensation

Example: P2E1D2I1S2.

An alternative approach for describing diabetic foot lesions is the Wagner-Armstrong classification.