FY2027 ICD-10-CM reference
B46: Zygomycosis
By the HCC Buddy Coding Team
The official ICD-10-CM descriptor is Zygomycosis. 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.
CMS-HCC V28
Not applicable to this nonbillable heading
CMS-HCC V24
Not applicable to this nonbillable heading
ESRD
Not applicable to this nonbillable heading
PACE
Not applicable to this nonbillable heading
RxHCC
Not applicable to this nonbillable heading
HHS-HCC
Not applicable to this nonbillable heading
More specific FY2027 codes
- B46.0: Pulmonary mucormycosisBillable code
- B46.1: Rhinocerebral mucormycosisBillable code
- B46.2: Gastrointestinal mucormycosisBillable code
- B46.3: Cutaneous mucormycosisBillable code
- B46.4: Disseminated mucormycosisBillable code
- B46.5: Mucormycosis, unspecifiedBillable code
- B46.8: Other zygomycosesBillable code
- B46.9: Zygomycosis, 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).
Compare the FY2027 additions, removals and billable-status changes
What does B46 mean in FY2027?
The official ICD-10-CM descriptor is Zygomycosis. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Is B46 billable in FY2027?
The FY2027 order file marks B46 as a nonbillable heading. Select a complete billable child code.
Does B46 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