A44

ICD-10Non-billable category

Bartonellosis

Official ICD-10-CM descriptor (FY2026)

Bartonellosis

A44 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.

More specific codes under A44

A44.0Systemic bartonellosis
A44.1Cutaneous and mucocutaneous bartonellosis
A44.8Other forms of bartonellosis
A44.9Bartonellosis, unspecified

Where this code sits

Chapter: 1. Certain infectious and parasitic diseases (A00-B99)
Block: Other bacterial diseases (A30-A49)

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.