K00–K95
Diseases of the Digestive System
GERD, IBS, liver disease, appendicitis
K59.02
Outlet dysfunction constipation
Billable
K59.03
Drug induced constipation
Billable
K59.04
Chronic idiopathic constipation
Billable
K59.09
Other constipation
Billable
K59.1
Functional diarrhea
Billable
K59.2
Neurogenic bowel, not elsewhere classified
Billable
K59.3
Megacolon, not elsewhere classified
Non-billable
K59.31
Toxic megacolon
Billable
K59.39
Other megacolon
Billable
K59.4
Anal spasm
Billable
K59.8
Other specified functional intestinal disorders
Non-billable
K59.81
Ogilvie syndrome
Billable
K59.89
Other specified functional intestinal disorders
Billable
K59.9
Functional intestinal disorder, unspecified
Billable
K60
Fissure and fistula of anal and rectal regions
Non-billable
K60.0
Acute anal fissure
Billable
K60.1
Chronic anal fissure
Billable
K60.2
Anal fissure, unspecified
Billable
K60.3
Anal fistula
Non-billable
K60.30
Anal fistula, unspecified
Billable
K60.31
Anal fistula, simple
Non-billable
K60.311
Anal fistula, simple, initial
Billable
K60.312
Anal fistula, simple, persistent
Billable
K60.313
Anal fistula, simple, recurrent
Billable
K60.319
Anal fistula, simple, unspecified
Billable
K60.32
Anal fistula, complex
Non-billable
K60.321
Anal fistula, complex, initial
Billable
K60.322
Anal fistula, complex, persistent
Billable
K60.323
Anal fistula, complex, recurrent
Billable
K60.329
Anal fistula, complex, unspecified
Billable
K60.4
Rectal fistula
Non-billable
K60.40
Rectal fistula, unspecified
Billable
K60.41
Rectal fistula, simple
Non-billable
K60.411
Rectal fistula, simple, initial
Billable
K60.412
Rectal fistula, simple, persistent
Billable
K60.413
Rectal fistula, simple, recurrent
Billable
K60.419
Rectal fistula, simple, unspecified
Billable
K60.42
Rectal fistula, complex
Non-billable
K60.421
Rectal fistula, complex, initial
Billable
K60.422
Rectal fistula, complex, persistent
Billable
K60.423
Rectal fistula, complex, recurrent
Billable
K60.429
Rectal fistula, complex, unspecified
Billable
K60.5
Anorectal fistula
Non-billable
K60.50
Anorectal fistula, unspecified
Billable
K60.51
Anorectal fistula, simple
Non-billable
K60.511
Anorectal fistula, simple, initial
Billable
K60.512
Anorectal fistula, simple, persistent
Billable
K60.513
Anorectal fistula, simple, recurrent
Billable
K60.519
Anorectal fistula, simple, unspecified
Billable
K60.52
Anorectal fistula, complex
Non-billable
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