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Table 1 Existing methods of identifying diabetic foot ulcers in administrative data

From: Diagnostic accuracy of existing methods for identifying diabetic foot ulcers from inpatient and outpatient datasets

  ICD-9-CM or CPT-4 codes Holzer Mayfield Harrington
A. Lower-extremity ulcer diagnosis     
Ulcer of lower limbs 707.1× x1 x X
Chronic ulcer of other specified sites 707.8 x   X
Chronic ulcer of unspecified sites 707.9 x x X
Carbuncle and furnancle of foot 680.7    Xx
Cellulitis and abscess of toe or foot 681.1, 682.7 x x Xx
Cellulitis and abscess of unspecified digit 681.9 x   Xx
Other cellulitis and abscess, leg except foot 682.6   x  
Osteomyelitis2 730.06-730.09, 730.16-730.19, 730.26-730.29 x x Xx
Gangrene3 785.4 x x Xx
Surgical complications from a stump infection 768   x  
Surgical complications from amputation 997.6   x  
Complications from a prior vascular graft 440.3, 996.62, 996.7, 996.74, E878.2   x  
B. Lower-extremity ulcer-related procedures    
Simple repair of superficial wound 12001-12002, 12004-12007 x   xxx
Debridement4 11040-11044, 77.68, 86.22, 86.28 x   xxx
Surgical debridement and drainage of abscess and cavities 20005, 28001-28005 x   
Lower-extremity radiographic techniques 73620-73630, 73650-76660    xxx
Angioscopy, arteriography, angiography 75710, 75716    xxx
Lower-extremity CAT or MRI scanning 73700-73702, 73720-73721    xxx
Incision or excision of foot 28001-28008, 28111-28160    xxx
Unna boot application 29540, 29550, 29580    xxx
Culture and sensitivity testing 87040, 87071-87072, 87075-87076, 87082-87085 x   
Aspiration, incision and drainage of infection or abscess 10060-10061, 10160, 20000, 86.01, 86.04 x   
Foot-sparing surgery 28020-28024, 28060, 28070, 28072, 28086, 28088, 28110-28126, 28140, 28150, 28153, 28160, 77.38, 77.88, 80.18 x   
Late amputation stump complication5 997.60-997.62, 997.69    xxx
Amputation, foot6 28800-28825, 84.10-84.12 x   xxx
Amputation, ankle/leg 27880-27889, 84.13-84.15 x   xxx
Amputation, knee and above 27590-27598, 84.16-84.17 x   xxx
  1. 1 'x' indicates the code(s) were used; 'xx' indicates the codes were used only when corroborated by procedures (identified by 'xxx') on or after the date of diagnosis.
  2. 2 Mayfield used 729.4, 730.x, and 731.x for osteomyelitis.
  3. 3 Mayfield used 785.4, 040.0, and 440.24 for gangrene.
  4. 4 Harrington did not use ICD-9 procedure codes.
  5. 5 These are ICD-9 diagnostic codes indicating previous surgical procedures.
  6. 6 Holzer did not use 84.10.