ICD-10 Diagnosis Code K61.31

Horseshoe abscess

Diagnosis Code K61.31

ICD-10: K61.31
Short Description: Horseshoe abscess
Long Description: Horseshoe abscess
This is the 2019 version of the ICD-10-CM diagnosis code K61.31

Valid for Submission
The code K61.31 is valid for submission for HIPAA-covered transactions.

New 2019 ICD-10 Code
K61.31 is new to ICD-10 code set for the FY 2019, effective October 1, 2018. The National Center for Health Statistics (NCHS) has published an update to the ICD-10-CM diagnosis codes which became effective October 1, 2018. This is a new and revised code for the FY 2019 (October 1, 2018 - September 30, 2019).

Code Classification
  • Diseases of the digestive system (K00–K93)
    • Other diseases of intestines (K55-K64)
      • Abscess of anal and rectal regions (K61)
Version 2019 Billable Code New Code

Information for Medical Professionals

Diagnostic Related Groups
The diagnosis code K61.31 is grouped in the following Diagnostic Related Group(s) (MS-DRG V35.0)

  • 393 - OTHER DIGESTIVE SYSTEM DIAGNOSES WITH MCC
  • 394 - OTHER DIGESTIVE SYSTEM DIAGNOSES WITH CC
  • 395 - OTHER DIGESTIVE SYSTEM DIAGNOSES WITHOUT CC/MCC

Index to Diseases and Injuries
References found for the code K61.31 in the Index to Diseases and Injuries:


Replacement Code
This code replaces the following previously assigned ICD-10 code(s) listed below:
  • K61.3 - Ischiorectal abscess


ICD-10 Footnotes

General Equivalence Map Definitions
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.

Present on Admission
The Present on Admission (POA) indicator is used for diagnosis codes included in claims involving inpatient admissions to general acute care hospitals. POA indicators must be reported to CMS on each claim to facilitate the grouping of diagnoses codes into the proper Diagnostic Related Groups (DRG). CMS publishes a listing of specific diagnosis codes that are exempt from the POA reporting requirement.

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