B44

Non-Billable

ChapterA00–B99

Rankcategory

Official Description

Aspergillosis

Use a more specific code (5 billable, 1 non-billable)

B44.0Invasive pulmonary aspergillosis B44.1Other pulmonary aspergillosis B44.2Tonsillar aspergillosis B44.7Disseminated aspergillosis B44.8Other forms of aspergillosishas subcodes B44.9Aspergillosis, unspecified

Metadata & Insights

•Non-billable category (requires more specific sub-code).
•Chapter 1: Certain Infectious and Parasitic Diseases (A00-B99).

CH1 Parent Instructions

Includes

diseases generally recognized as communicable or transmissible

Excludes1(Not coded here. Use a different code.)

certain localized infections - see body system-related chapters

Excludes2(Not included here. Code separately if applicable.)

carrier or suspected carrier of infectious disease (Z22.-)
infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
infectious and parasitic diseases specific to the perinatal period (P35-P39)
influenza and other acute respiratory infections (J00-J22)

Use Additional Code

code to identify resistance to antimicrobial drugs (Z16.-)

B35-B49 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)

hypersensitivity pneumonitis due to organic dust (J67.-)
mycosis fungoides (C84.0-)

Instructional Notes

Includes

aspergilloma

Clinical Hierarchy

BillableHas subcodes

CH1Certain infectious and parasitic diseases (A00-B99)

B35-B49Mycoses (B35-B49)

B44AspergillosisNot billable

B44.0Invasive pulmonary aspergillosisBillable

B44.1Other pulmonary aspergillosisBillable

B44.2Tonsillar aspergillosisBillable

B44.7Disseminated aspergillosisBillable

B44.8Other forms of aspergillosisSubcodes

B44.9Aspergillosis, unspecifiedBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to B44:

blockB35-B49

Mycoses (B35-B49)

View context instructions

chapterCH1

Certain infectious and parasitic diseases (A00-B99)

View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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