1. ICD-10-CM Codes
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2. A00-B99
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3. A20-A28
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4. A28-
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5. 2023 ICD-10-CM Diagnosis Code A28.1

2023 ICD-10-CM Diagnosis Code A28.1

Cat-scratch disease

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

• A28.1 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 A28.1 became effective on October 1, 2022.
• This is the American ICD-10-CM version of A28.1 - other international versions of ICD-10 A28.1 may differ.

• Cat scratch disease

• A bacterial infection caused by bartonella henselae. It is transmitted to humans from a scratch, bite, or lick from a cat. A blister or a bump appears on the skin following the scratch or bite. Subsequently, there is lymph node enlargement around the scratch or bite site. The lymph node enlargement most often occurs under the arm or the neck. Some patients experience fever, fatigue, headaches or sore throat as well.
• A self-limiting bacterial infection of the regional lymph nodes caused by afipia felis, a gram-negative bacterium recently identified by the Centers for Disease Control and Prevention. and by bartonella henselae. It usually arises one or more weeks following a feline scratch, with raised inflammatory nodules at the site of the scratch being the primary symptom.
• Cat scratch disease (csd) is an illness caused by the bacterium bartonella henselae. Almost half of all cats carry the infection at some point. The infection does not make cats sick. However, the scratch or bite of an infected cat can cause symptoms in people, including
  • swollen lymph nodes, especially around the head, neck and upper limbs
  • fever
  • headache
  • fatigue
  • poor appetite
  for people with weak immune systems, csd may cause more serious problems. The best way to avoid csd is to avoid rough play with cats that could lead to scratches or bites. If you do get a scratch or bite, wash it well with soap and water. If the bite or scratch gets infected or if you have symptoms of csd, call your doctor. Centers for Disease Control and Prevention.

• 814 Reticuloendothelial and immunity disorders with mcc
• 815 Reticuloendothelial and immunity disorders with cc
• 816 Reticuloendothelial and immunity disorders without cc/mcc

Convert A28.1 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

• Cat-scratch - see also Abrasion
  • disease or fever A28.1
• Disease, diseased - see also Syndrome
  • cat-scratch A28.1
• Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) G04.90
  ICD-10-CM Diagnosis Code G04.90

  Encephalitis and encephalomyelitis, unspecified

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

  Applicable To

  • Ventriculitis (cerebral) NOS
  • due to
    • cat scratch disease A28.1
• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) R50.9
  ICD-10-CM Diagnosis Code R50.9

  Fever, unspecified

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

  Applicable To

  • Fever NOS
  • Fever of unknown origin [FUO]
  • Fever with chills
  • Fever with rigors
  • Hyperpyrexia NOS
  • Persistent fever
  • Pyrexia NOS
  • cat-scratch A28.1
• Lymphoreticulosis, benign A28.1 (of inoculation)

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