1. ICD-10-CM Codes
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2. K00-K95
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3. K65-K68
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4. K65-
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5. 2023 ICD-10-CM Diagnosis Code K65.4

2023 ICD-10-CM Diagnosis Code K65.4

Sclerosing mesenteritis

2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code

• K65.4 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 K65.4 became effective on October 1, 2022.
• This is the American ICD-10-CM version of K65.4 - other international versions of ICD-10 K65.4 may differ.

• Fat necrosis of peritoneum
• Peritoneal fat necrosis

• Inflammation of the adipose tissue in the mesentery, a form of peritoneal panniculitis, it is characterized by the presence of multinucleated giant cells and lipid-laden macrophages in the mesentery.
• This entity represents the fibrotic stage of mesentery inflammation.

• 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 K65.4 to ICD-9-CM

• 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

• Fat
  • necrosis
    • mesentery K65.4
    • omentum K65.4
• Fibrosis, fibrotic
  • sclerosing mesenteric K65.4 (idiopathic)
• Lipodystrophy (progressive) E88.1
  ICD-10-CM Diagnosis Code E88.1

  Lipodystrophy, not elsewhere classified

  2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code

  Applicable To

  • Lipodystrophy NOS

  Type 1 Excludes

  • Whipple's disease (K90.81)
  • mesenteric K65.4
• Mesenteritis
  • retractile K65.4
  • sclerosing K65.4
• Necrosis, necrotic (ischemic) - see also Gangrene
  • fat, fatty (generalized) - see also Disorder, soft tissue, specified type NEC
    • abdominal wall K65.4
    • mesentery K65.4
    • omentum K65.4
    • peritoneum K65.4
  • mesentery K55.069
    - see also Infarct, intestine
    ICD-10-CM Diagnosis Code K55.069

    Acute infarction of intestine, part and extent unspecified

    2017 - New Code 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    • fat K65.4
  • omentum (with mesenteric infarction) K55.069
    - see also Infarct, intestine
    ICD-10-CM Diagnosis Code K55.069

    Acute infarction of intestine, part and extent unspecified

    2017 - New Code 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    • fat K65.4
  • peritoneum (with mesenteric infarction) K55.069
    - see also Infarct, intestine
    ICD-10-CM Diagnosis Code K55.069

    Acute infarction of intestine, part and extent unspecified

    2017 - New Code 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    • fat K65.4
• Panniculitis (nodular) (nonsuppurative) M79.3
  ICD-10-CM Diagnosis Code M79.3

  Panniculitis, unspecified

  2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code

  Type 1 Excludes

  • lupus panniculitis (L93.2)
  • neck and back panniculitis (M54.0-)
  • relapsing [Weber-Christian] panniculitis (M35.6)
  • mesenteric K65.4

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