ICD10BillableValid for clinical use

ICD-10 Code A28.1: Cat-scratch disease

A28.1 is a billable ICD-10 diagnosis code used to classify Cat-scratch disease in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Certain infectious and parasitic diseases (A00-B99).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Certain infectious and parasitic diseases (A00-B99).

When is it used?

  • May be used when a clinician documents cat-scratch disease in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
1Certain infectious and parasitic diseases (A00-B99)
block
A20-A28Certain zoonotic bacterial diseases
category
A28Other zoonotic bacterial diseases, not elsewhere classified
currentA28

Official coding notes

Inclusion terms
  • Cat-scratch fever

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

Infectious Disease SpecialistGeneral Physician

Coding guidelines

Compatibility

Legacy and official ICD code match exactly.
Legacy codes
A28.1

Common synonyms

Cat-scratch disease

Frequently asked questions

Code details

CodeA28.1
SystemICD10
Display nameCat-scratch disease
ChapterCertain infectious and parasitic diseases (A00-B99)
BlockCertain zoonotic bacterial diseases

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Cat-scratchDisease, diseasedEncephalitis(chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute)Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)Lymphoreticulosis, benign(of inoculation)

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code A28.1 for Cat-scratch disease | HealthAssure