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ICD-10-CM Codes
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K00-K95
Diseases of the digestive system
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K55-K64
Other diseases of intestines
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K61-
Abscess of anal and rectal regions
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2021 ICD-10-CM Diagnosis Code K61.1
2021 ICD-10-CM Diagnosis Code K61.1
Rectal abscess
2016 2017 2018 2019 2020 2021 Billable/Specific Code
- K61.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2021 edition of ICD-10-CM K61.1 became effective on October 1, 2020.
- This is the American ICD-10-CM version of K61.1 - other international versions of ICD-10 K61.1 may differ.
Type 1 ExcludesType 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as K61.1. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
The following code(s) above
K61.1 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
- Applicable To annotations, or
- Code Also annotations, or
- Code First annotations, or
- Excludes1 annotations, or
- Excludes2 annotations, or
- Includes annotations, or
- Note annotations, or
- Use Additional annotations
that may be applicable to
K61.1:
- Perirectal abscess
- Perirectal cellulitis
ICD-10-CM K61.1 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
- 393 Other digestive system diagnoses with mcc
- 394 Other digestive system diagnoses with cc
- 395 Other digestive system diagnoses without cc/mcc
- 791 Prematurity with major problems
- 793 Full term neonate with major problems
Convert K61.1 to ICD-9-CM
Code History
- 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
- Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic) L02.91
ICD-10-CM Diagnosis Code L02.91
Cutaneous abscess, unspecified
2016 2017 2018 2019 2020 2021 Billable/Specific Code
- intestine, intestinal NEC K63.0
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-)
- pararectal K61.1
- perirectal K61.1
- rectum K61.1
- Cellulitis (diffuse) (phlegmonous) (septic) (suppurative) L03.90
ICD-10-CM Diagnosis Code L03.90
Cellulitis, unspecified
2016 2017 2018 2019 2020 2021 Billable/Specific Code
- perirectal K61.1
- rectum K61.1
ICD-10-CM Codes Adjacent To K61.1
K59.9 Functional intestinal disorder, unspecified
K60 Fissure and fistula of anal and rectal regions
K60.1 Chronic anal fissure
K60.2 Anal fissure, unspecified
K61 Abscess of anal and rectal regions
K61.1
Rectal abscess
K61.3 Ischiorectal abscess
K61.39 Other ischiorectal abscess
K61.4 Intrasphincteric abscess
K61.5 Supralevator abscess
K62 Other diseases of anus and rectum
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
