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Table 1 Skin and soft tissue infections (SSTI) by clinical condition, severity, and ICD-9 code

From: Incidence of skin and soft tissue infections in ambulatory and inpatient settings, 2005–2010

Description ICD-9 codes
Uncomplicated SSTI  
  Carbuncle and furuncle 680.x
  Cellulitis and abscessa 681.x-682.x
  Erysipelasa 035.x
  Impetigo 684.x
  Mastitis 611.0x, 771.5x
  Folliculitisa 704.8x
Complicated SSTI  
  “Other” skin and subcutaneous tissue infections 686.x
  Decubitis Ulcerb 707.x
  Infection due to device or graft 996.6x
  Surgical site infection 998.5x, 999.3x
  Non-healing surgical woundb 998.83
  Any SSTI diagnosis in a patient with any of the following comorbidities:
  Diabetes 250.xx
  Chronic kidney disease 585.xx, 403.xx
  Chronic liver disease 571.xx, 572.xx
  Peripheral artery disease 440.xx, 443.9
  Neuropathy 356.xx, 357.xx, 250.6x
  Obesity 278.0x, 278.00, 278.01, 278.02, V85.21, V85.22, V85.23, V85.24, V85.25, V85.4, V85.3x
  Alcohol or drug abuse 303.xx, 304.xx, 305.xx
  Compromised immune function 279.0x, 279.1x, 279.2x, 279.3x, 334.8x
  1. aCellulitis, erysipelas, and folliculitis were considered complicated if the index diagnosis of the primary diagnosis was on an inpatient claim
  2. bDecubitis ulcer and non-healing surgical wound were considered an active infection if: either a) clinical diagnosis was associated with concomitant prescription of any of the following of antibiotics: dicloxacillin, vancomycin, cefalexin, cefazolin, linezolid, daptomycin, clindamycin, trimethoprim-sulfamethoxazole, doxycycline, minocycline, quniupristin-dalfopristin within ± 10 days of the index diagnosis; or b) if no other concomitant clinical diagnosed infection occurred
  3. Uncomplicated and complicated categories adapted from: Stevens DL et al. [15]