2020 ICD-10-CM Diagnosis Code K35.891

Other acute appendicitis without perforation, with gangrene

    2019 - New Code 2020 Billable/Specific Code
  • K35.891 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM K35.891 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of K35.891 - other international versions of ICD-10 K35.891 may differ.
Applicable To
  • (Acute) appendicitis with gangrene NOS
The following code(s) above K35.891 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 K35.891:
  • K00-K95
    2020 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
ICD-10-CM K35.891 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 371 Major gastrointestinal disorders and peritoneal infections with mcc
  • 372 Major gastrointestinal disorders and peritoneal infections with cc
  • 373 Major gastrointestinal disorders and peritoneal infections without cc/mcc
Code History
  • 2019 (effective 10/1/2018): New code
  • 2020 (effective 10/1/2019): No change

Diagnosis Index entries containing back-references to K35.891:
  • Appendicitis (pneumococcal) (retrocecal) K37
    ICD-10-CM Diagnosis Code K37

    Unspecified appendicitis

      2016 2017 2018 2019 2020 Billable/Specific Code
    Type 1 Excludes
    • with
      • gangrene K35.891
    • acute (catarrhal) (fulminating) (gangrenous) (obstructive) (retrocecal) (suppurative) K35.80
      ICD-10-CM Diagnosis Code K35.80

      Unspecified acute appendicitis

        2016 2017 2018 2019 2020 Billable/Specific Code
      Applicable To
      • Acute appendicitis NOS
      • Acute appendicitis without (localized) (generalized) peritonitis
      • with
        • gangrene K35.891
      • specified NEC K35.890
        ICD-10-CM Diagnosis Code K35.890

        Other acute appendicitis without perforation or gangrene

          2019 - New Code 2020 Billable/Specific Code
        • with gangrene K35.891

ICD-10-CM Codes Adjacent To K35.891
K35.21 …… with abscess
K35.3 Acute appendicitis with localized peritonitis
K35.30 …… without perforation or gangrene
K35.31 …… and gangrene, without perforation
K35.32 Acute appendicitis with perforation and localized peritonitis, without abscess
K35.33 Acute appendicitis with perforation and localized peritonitis, with abscess
K35.8 Other and unspecified acute appendicitis
K35.80 Unspecified acute appendicitis
K35.89 Other acute appendicitis
K35.890 …… without perforation or gangrene
K35.891 …… without perforation, with gangrene
K36 Other appendicitis
K37 Unspecified appendicitis
K38 Other diseases of appendix
K38.0 Hyperplasia of appendix
K38.1 Appendicular concretions
K38.2 Diverticulum of appendix
K38.3 Fistula of appendix
K38.8 Other specified diseases of appendix
K38.9 Disease of appendix, unspecified
K40 Inguinal hernia

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