FY2027 ICD-10-CM reference
B44: Aspergillosis
By the HCC Buddy Coding Team
The official ICD-10-CM descriptor is Aspergillosis. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Nonbillable heading. Verified against the official FY2027 order file.
More specific FY2027 codes
- B44.0: Invasive pulmonary aspergillosisBillable code
- B44.1: Other pulmonary aspergillosisBillable code
- B44.2: Tonsillar aspergillosisBillable code
- B44.7: Disseminated aspergillosisBillable code
- B44.8: Other forms of aspergillosisNonbillable heading
- B44.9: Aspergillosis, unspecifiedBillable code
FY2027 Tabular instructions
Instructions below include applicable chapter, section and parent-code notes. Each note identifies where it appears in the official source.
Includes
diseases generally recognized as communicable or transmissible
Source: A00-B99 (chapter, inherited).
Instructional note
code to identify resistance to antimicrobial drugs (Z16.-)
Source: A00-B99 (chapter, inherited).
Excludes2
carrier or suspected carrier of infectious disease (Z22.-)
Source: A00-B99 (chapter, inherited).
Excludes2
certain localized infections - see body system-related chapters
Source: A00-B99 (chapter, inherited).
Excludes2
infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
Source: A00-B99 (chapter, inherited).
Excludes2
infectious and parasitic diseases specific to the perinatal period (P35-P39)
Source: A00-B99 (chapter, inherited).
Excludes2
influenza and other acute respiratory infections (J00-J22)
Source: A00-B99 (chapter, inherited).
Excludes2
hypersensitivity pneumonitis due to organic dust (J67.-)
Source: B35-B49 (section, inherited).
Excludes2
mycosis fungoides (C84.0-)
Source: B35-B49 (section, inherited).
Code also
, if applicable:
Source: B44 (category, direct).
Code also
aspergilloma of other site - code to chronic infection of site
Source: B44 (category, direct).
Code also
pulmonary aspergilloma (J4B)
Source: B44 (category, direct).
Code also
pulmonary aspergillosis fungal ball (J4B)
Source: B44 (category, direct).
Code also
pulmonary mycetoma (J4B)
Source: B44 (category, direct).
Code also
sinus aspergilloma (J32.-)
Source: B44 (category, direct).
Compare the FY2027 additions, removals and billable-status changes
What does B44 mean in FY2027?
The official ICD-10-CM descriptor is Aspergillosis. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Is B44 billable in FY2027?
The FY2027 order file marks B44 as a nonbillable heading. Select a complete billable child code.
Does B44 map to an HCC?
Risk-model mapping is not applicable to this nonbillable heading. Check a complete billable child code.
Source: CMS FY2027 ICD-10-CM order file. Payment model: CMS CY 2027 Rate Announcement. Read the FY2027 Official Guidelines.
Review the FY2026 April edition