ICD-10-CM Codes
K00-K95
K55-K64
K61-
2023 ICD-10-CM Diagnosis Code K61.1

2023 ICD-10-CM Diagnosis Code K61.1

Rectal abscess

2016

2017

2018

2019

2020

2021

2022

2023

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 2023 edition of ICD-10-CM K61.1 became effective on October 1, 2022.
This is the American ICD-10-CM version of K61.1 - other international versions of ICD-10 K61.1 may differ.

Applicable To

Perirectal abscess

Type 1 Excludes

Type 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.

ischiorectal abscess (
ICD-10-CM Diagnosis Code K61.39
Other ischiorectal abscess
Applicable To
- Abscess of ischiorectal fossa
- Ischiorectal abscess, NOS
K61.39
)

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:

K00-K95
2023 ICD-10-CM Range K00-K95
Diseases of the digestive system
Type 2 Excludes
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Diseases of the digestive system
K61
ICD-10-CM Diagnosis Code K61
Abscess of anal and rectal regions
Includes
- abscess of anal and rectal regions
- cellulitis of anal and rectal regions
Abscess of anal and rectal regions

Approximate Synonyms

Perirectal abscess
Perirectal cellulitis

ICD-10-CM K61.1 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):

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
2022 (effective 10/1/2021): No change
2023 (effective 10/1/2022): No change

Diagnosis Index entries containing back-references to K61.1:

Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic) L02.91
ICD-10-CM Diagnosis Code L02.91
Cutaneous abscess, unspecified
- intestine, intestinal NEC K63.0
  ICD-10-CM Diagnosis Code K63.0
  Abscess of intestine
  2016 2017 2018 2019 2020 2021 2022 2023 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-)
  - rectal K61.1
- 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
- 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

K60.0 Acute anal fissure

K60.1 Chronic anal fissure

K60.2 Anal fissure, unspecified

K60.3 Anal fistula

K60.4 Rectal fistula

K60.5 Anorectal fistula

K61 Abscess of anal and rectal regions

K61.0 Anal abscess

K61.1 Rectal abscess

K61.2 Anorectal abscess

K61.3 Ischiorectal abscess

K61.31 Horseshoe abscess

K61.39 Other ischiorectal abscess

K61.4 Intrasphincteric abscess

K61.5 Supralevator abscess

K62 Other diseases of anus and rectum

K62.0 Anal polyp

K62.1 Rectal polyp

K62.2 Anal prolapse

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

2023 ICD-10-CM Diagnosis Code K61.1

Rectal abscess

Other ischiorectal abscess

Diseases of the digestive system

Abscess of anal and rectal regions

Cutaneous abscess, unspecified

Abscess of intestine

Cellulitis, unspecified