2020 ICD-10-CM Diagnosis Code A28.1

Cat-scratch disease

    2016 2017 2018 2019 2020 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 2020 edition of ICD-10-CM A28.1 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of A28.1 - other international versions of ICD-10 A28.1 may differ.
Applicable To
  • Cat-scratch fever
The following code(s) above A28.1 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 A28.1:
  • A00-B99
    2020 ICD-10-CM Range A00-B99

    Certain infectious and parasitic diseases

    Includes
    • diseases generally recognized as communicable or transmissible
    Type 1 Excludes
    • certain localized infections - see body system-related chapters
    Type 2 Excludes
    • carrier or suspected carrier of infectious disease (Z22.-)
    • infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
    • infectious and parasitic diseases specific to the perinatal period (P35-P39)
    • influenza and other acute respiratory infections (J00-J22)
    Use Additional
    • code to identify resistance to antimicrobial drugs (Z16.-)
    Certain infectious and parasitic diseases
Approximate Synonyms
  • Cat scratch disease
Clinical Information
  • 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.
ICD-10-CM A28.1 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 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

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

Diagnosis Index entries containing back-references to A28.1:
  • 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 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 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)

ICD-10-CM Codes Adjacent To A28.1
A26.8 Other forms of erysipeloid
A26.9 Erysipeloid, unspecified
A27 Leptospirosis
A27.0 Leptospirosis icterohemorrhagica
A27.8 Other forms of leptospirosis
A27.81 Aseptic meningitis in leptospirosis
A27.89 Other forms of leptospirosis
A27.9 Leptospirosis, unspecified
A28 Other zoonotic bacterial diseases, not elsewhere classified
A28.0 Pasteurellosis
A28.1 Cat-scratch disease
A28.2 Extraintestinal yersiniosis
A28.8 Other specified zoonotic bacterial diseases, not elsewhere classified
A28.9 Zoonotic bacterial disease, unspecified
A30 Leprosy [Hansen's disease]
A30.0 Indeterminate leprosy
A30.1 Tuberculoid leprosy
A30.2 Borderline tuberculoid leprosy
A30.3 Borderline leprosy
A30.4 Borderline lepromatous leprosy
A30.5 Lepromatous leprosy

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