ICD10BillableValid for clinical use

ICD-10 Code A49.02: Methicillin resistant Staphylococcus aureus infection, unspecified site

A49.02 is a billable ICD-10 diagnosis code used to classify Methicillin resistant Staphylococcus aureus infection, unspecified site 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 21 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 methicillin resistant staphylococcus aureus infection, unspecified site 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
A30-A49Other bacterial diseases
category
A49Bacterial infection of unspecified site
category
A49.0Staphylococcal infection, unspecified site
currentA49.0

Official coding notes

Inclusion terms
  • Methicillin resistant Staphylococcus aureus (MRSA) infection

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

Common synonyms

Methicillin resistant Staphylococcus aureus infection, unspecified siteMethicillin resistant Staphylococcus aureus infection

Frequently asked questions

Code details

CodeA49.02
SystemICD10
Display nameMethicillin resistant Staphylococcus aureus infection, unspecified site
ChapterCertain infectious and parasitic diseases (A00-B99)
BlockOther bacterial diseases

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Infection, infected, infective(opportunistic)Infection, infected, infective(opportunistic)MRSA(Methicillin resistant Staphylococcus aureus)

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 A49.02 for Methicillin resistant Staphylococcus aureus infection, unspecified site | HealthAssure