1. ICD-10-CM Codes
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2. K00-K95 Diseases of the digestive system
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3. K55-K64 Other diseases of intestines
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4. K61- Abscess of anal and rectal regions
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5. 2021 ICD-10-CM Diagnosis Code K61

2021 ICD-10-CM Diagnosis Code K61

Abscess of anal and rectal regions

2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code

• K61 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
• The 2021 edition of ICD-10-CM K61 became effective on October 1, 2020.
• This is the American ICD-10-CM version of K61 - other international versions of ICD-10 K61 may differ.

• 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
• 2017 (effective 10/1/2016): No change
• 2018 (effective 10/1/2017): No change
• 2019 (effective 10/1/2018): No change
• 2020 (effective 10/1/2019): No change
• 2021 (effective 10/1/2020): No change

• Type 1 Excludes: K60
  ICD-10-CM Diagnosis Code K60

  Fissure and fistula of anal and rectal regions

  2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code

  Type 1 Excludes

  • fissure and fistula of anal and rectal regions with abscess or cellulitis (K61.-)

  Type 2 Excludes

  • anal sphincter tear (healed) (nontraumatic) (old) (K62.81)
• Type 2 Excludes: K63.0
  , L02
  , L03
  , L03.31
  ICD-10-CM Diagnosis Code K63.0

  Abscess of intestine

  2016 2017 2018 2019 2020 2021 Billable/Specific Code

  Type 1 Excludes

  • abscess of intestine with Crohn's disease (K50.014, K50.114, K50.814, K50.914,)
  • abscess of intestine with diverticular disease (K57.0, K57.2, K57.4, K57.8)
  • abscess of intestine with ulcerative colitis (K51.014, K51.214, K51.314, K51.414, K51.514, K51.814, K51.914)

  Type 2 Excludes

  • abscess of anal and rectal regions (K61.-)
  • abscess of appendix (K35.3-)
  ICD-10-CM Diagnosis Code L02

  Cutaneous abscess, furuncle and carbuncle

  2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code

  Type 2 Excludes

  • abscess of anus and rectal regions (K61.-)
  • abscess of female genital organs (external) (N76.4)
  • abscess of male genital organs (external) (N48.2, N49.-)

  Use Additional

  • code to identify organism (B95-B96)
  ICD-10-CM Diagnosis Code L03

  Cellulitis and acute lymphangitis

  2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code

  Type 2 Excludes

  • cellulitis of anal and rectal region (K61.-)
  • cellulitis of external auditory canal (H60.1)
  • cellulitis of eyelid (H00.0)
  • cellulitis of female external genital organs (N76.4)
  • cellulitis of lacrimal apparatus (H04.3)
  • cellulitis of male external genital organs (N48.2, N49.-)
  • cellulitis of mouth (K12.2)
  • cellulitis of nose (J34.0)
  • eosinophilic cellulitis [Wells] (L98.3)
  • febrile neutrophilic dermatosis [Sweet] (L98.2)
  • lymphangitis (chronic) (subacute) (I89.1)
  ICD-10-CM Diagnosis Code L03.31

  Cellulitis of trunk

  2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code

  Type 2 Excludes

  • cellulitis of anal and rectal regions (K61.-)
  • cellulitis of breast NOS (N61.0)
  • cellulitis of female external genital organs (N76.4)
  • cellulitis of male external genital organs (N48.2, N49.-)
  • omphalitis of newborn (P38.-)
  • puerperal cellulitis of breast (O91.2)

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.