Bartonellosis (A44) ICD-10-CM
The A44 code range covers bartonellosis with 5 ICD-10-CM diagnosis codes. 4 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Codes in the A44 Range 5 codes · 4 billable
About the A44 Code Range
ICD-10 code A44 covers all forms of Bartonellosis, an infection caused by Bartonella bacteria affecting different body systems. These codes specify the type and severity, from systemic illness to skin-related manifestations.
The ICD-10 code for systemic bartonellosis (A44.0) identifies serious bloodstream infections known as Oroya fever or hemolytic anemia caused by Bartonella bacilliformis. For skin and mucous membrane infections like Verruga peruana, use A44.1, which captures cutaneous and mucocutaneous bartonellosis. A44.8 includes other rare forms such as neurobartonellosis and bacillary peliosis, which can be caused by Bartonella species like B. henselae or B. quintana. When the type of bartonellosis is not specified, A44.9 applies, including asymptomatic cases or unspecified Bartonella infections. Using these exact codes ensures precise reporting and aids in clinical differentiation of bartonellosis manifestations for treatment and epidemiological tracking.
Questions About This Page
How many billable codes are in the A44 range?
Of the 5 codes in this range, 4 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the A44 range classify?
The range classifies bartonellosis. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
