Endocrinology · Surgery

PEDIS Score for Diabetic Foot Ulcers calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

Perfusion

No peripheral artery disease scores 0. Disease without critical limb ischemia scores 1. Critical limb ischemia scores 2.

Skin intact

Ulcer area

cm²

Allowed range: 0–500 cm²

cm², longest diameter times the perpendicular diameter. Used only when skin is not intact. Under 1 scores 1, 1 through 3 scores 2, and above 3 scores 3.

Depth

Intact skin 0, superficial ulcer 1, fascia muscle or tendon 2, bone or joint 3.

Infection

None 0, surface infection 1, abscess fasciitis or septic arthritis 2, systemic inflammatory response 3.

Sensation

Loss of protective sensation to a 10 g monofilament or a 128 Hz tuning fork scores 1. No loss scores 0.

Result

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Primary source

Chuan F, Tang K, Jiang P, Zhou B, He X. Reliability and validity of the perfusion, extent, depth, infection and sensation (PEDIS) classification system and score in patients with diabetic foot ulcer. PLoS One. DOI: 10.1371/journal.pone.0124739. PMID: 25875097. Table 1 assigns the Score column to each grade: grade 1 scores 0, grade 2 scores 1, grade 3 scores 2, and grade 4 scores 3. Perfusion: no peripheral arterial disease 0, peripheral arterial disease without critical limb ischemia 1, critical limb ischemia 2. Extent: skin intact 0, under 1 cm² 1, 1–3 cm² 2, over 3 cm² 3. Depth: skin intact 0, superficial 1, fascia muscle or tendon 2, bone or joint 3. Infection: none 0, surface 1, abscess fasciitis or septic arthritis 2, systemic inflammatory response 3. Sensation: no loss 0, loss 1. The five categories sum to a maximum of 12. The receiver-operating-characteristic threshold for adverse outcome was 7. Scores of 7 or higher are placed on the adverse side of that printed threshold, and scores of 6 or lower are not. Extent uses the largest diameter times the perpendicular diameter. Intact skin scores 0 for extent even if a number is entered. Area under 1 cm² scores 1, 1 cm² through 3 cm² scores 2, and above 3 cm² scores 3. (2015)

Scope: People with a diabetic foot ulcer scored with the five PEDIS categories in Table 1. The numeric score is the sum published in this validation paper.

Last reviewed 2026-10-17

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Professional use only

For qualified clinicians. Independently verify inputs, calculations, source guidance, and applicability before any clinical action. This calculator does not replace clinical judgment.

Source: Chuan F, Tang K, Jiang P, Zhou B, He X. Reliability and validity of the perfusion, extent, depth, infection and sensation (PEDIS) classification system and score in patients with diabetic foot ulcer. PLoS One. DOI: 10.1371/journal.pone.0124739. PMID: 25875097. Table 1 assigns the Score column to each grade: grade 1 scores 0, grade 2 scores 1, grade 3 scores 2, and grade 4 scores 3. Perfusion: no peripheral arterial disease 0, peripheral arterial disease without critical limb ischemia 1, critical limb ischemia 2. Extent: skin intact 0, under 1 cm² 1, 1–3 cm² 2, over 3 cm² 3. Depth: skin intact 0, superficial 1, fascia muscle or tendon 2, bone or joint 3. Infection: none 0, surface 1, abscess fasciitis or septic arthritis 2, systemic inflammatory response 3. Sensation: no loss 0, loss 1. The five categories sum to a maximum of 12. The receiver-operating-characteristic threshold for adverse outcome was 7. Scores of 7 or higher are placed on the adverse side of that printed threshold, and scores of 6 or lower are not. Extent uses the largest diameter times the perpendicular diameter. Intact skin scores 0 for extent even if a number is entered. Area under 1 cm² scores 1, 1 cm² through 3 cm² scores 2, and above 3 cm² scores 3. (2015)

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Clinical inputs

Perfusion
Skin intact
Ulcer area (cm²)Accepted range: 0 to 500
Depth
Infection
Sensation

Primary source

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