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2007 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Skin And Subcutaneous Tissue 680-709 > Infections Of Skin And Subcutaneous Tissue 680-686 >

2007 ICD-9-CM Diagnosis 685

Pilonidal cyst

 On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date.

The 2009 version of ICD-9-CM 685 can be accessed here.

  • A hair-containing cyst or sinus, occurring chiefly in the coccygeal region.
  • 685 is a non-specific code that cannot be used to specify a diagnosis

685 includes:

  • fistula, coccygeal or pilonidal
  • sinus, coccygeal or pilonidal