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B44.8 ICD-10-CM Code: Other forms of aspergillosis

Compare with another codeCheck this code on a claim

Billing Status: NO. This is a non-billable ICD-10-CM code: report a more specific billable code beneath it.

Coding at a Glance

Tabular directives
2 Excludes2 · 6 code-also instructions

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for B44.8 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2027Effective: October 1, 2026

Trace:FY2027 changesChange historyRelease, file and checksum

Notes without a marker are published on B44.8 itself; “inherited from” names the category or block whose note applies here.

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

Source: inherited from B35-B49

Code Also

Additional codes that may be required to fully describe the encounter.

  • Code also, if applicable:
  • aspergilloma of other site - code to chronic infection of site
  • pulmonary aspergilloma (J4B)
  • pulmonary aspergillosis fungal ball (J4B)
  • pulmonary mycetoma (J4B)
  • sinus aspergilloma (J32.-)

Source: inherited from B44

Coder workflow for B44.8

MedCoder structured workflow — derived from this code’s own official record

Before you code B44.8

  1. B44.8 is not reportable as written. Select the more specific code beneath it that the documentation supports. Codes are reported to the highest level of specificity the classification provides (Guidelines I.B.2).

    ReviewB44.81, B44.89

    See the relationships section · Guide: How to choose an ICD-10-CM code →

  2. “Other” (NEC) means the condition is specified in the record but no dedicated code captures it. Confirm the documented form is not one a sibling code names before settling on B44.8; if the record states no specifics at all, the unspecified sibling applies instead. “Other” codes are for documented conditions the classification gives no specific code; “unspecified” codes are for records lacking the detail (Guidelines I.A.9.a, I.A.9.b).

    ReviewB44.0, B44.2, B44.7

    See the relationships section · Guide: Other vs unspecified (NEC vs NOS) →

Choose the right path

  1. Does the documentation support one of the more specific codes beneath B44.8?
    Yes → Select that code and continue the checks below on its own page.
    No → B44.8 cannot be reported as written; query for the specificity its subcategory needs.

    ReviewB44.81, B44.89

Consider B44.8. Then review the Code Also note, and confirm the code is valid for the date of service in the Verify section.

Documentation check

The provider’s diagnostic statement
Codes are assigned from the provider’s documented diagnosis, not from clinical criteria, test values or a medication list (Guidelines I.A.19).
Any detail beyond this code’s title
What the record states that a more specific sibling code would capture — or its absence, which itself supports the unspecified code.

Official instructions as workflow

  • Excludes2 — not part of B44.8(2 notes)

    Coding workflow: The conditions named in this note are not included in B44.8. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

    CompareJ67, C84.0

    See the official tabular notes · Guidelines I.A.12.b

  • Code Also — related condition(6 notes)

    Coding workflow: Review the related condition when both are documented and the instruction applies. A Code Also note does not fix sequencing; the order follows the circumstances of the encounter.

    ReviewJ4B, J32

    See the official tabular notes · Guidelines I.A.17

Every row is derived from this code’s own record — its title, tabular notes, 7th-character family and same-category siblings — with fixed MedCoder wording; nothing is inferred about a patient. The official notes and guideline text are in the sections each row links to, and they control.

Coding context

The comparisons, hierarchy, index entries, guidelines, relationships, risk-adjustment and coverage context a coder commonly needs. Each section names whether it is official source data, a MedCoder-derived relationship or MedCoder editorial.

Don’t confuse B44.8 with…

MedCoder analysis — pairs from this code’s official notes, distinctions written by MedCoder

The codes most likely to be picked instead of B44.8 — named in its own official notes, or sharing its laterality or encounter family — with what separates them and which documentation moves the case. Each links to the full comparison.

  • B44.9— Specificity relationship (Review)

    Overlapping diagnoses in the same category.

    Overlapping codes in the same category — the documentation decides which is the more specific fit.

    What moves you there: A record that documents no more than “Aspergillosis, unspecified” takes B44.9; specificity in the record moves it back here.

    Full comparison: B44.8 vs B44.9 →

  • J67— Excludes2 relationship (Informational)

    Distinct conditions — both may be reported.

    A distinct condition — both may be reported when both are documented.

    What moves you there: Documentation of hypersensitivity pneumonitis due to organic dust adds J67; it is not part of this code and both may be reported when both are documented.

    Full comparison: B44.8 vs J67 →

  • C84.0— Excludes2 relationship (Informational)

    Distinct conditions — both may be reported.

    A distinct condition — both may be reported when both are documented.

    What moves you there: Documentation of mycosis fungoides adds C84.0; it is not part of this code and both may be reported when both are documented.

    Full comparison: B44.8 vs C84.0 →

Relationships are read from this code's own official notes, its laterality siblings and its encounter family; the wording of each distinction is MedCoder editorial, and the documentation named in each “what moves you there” line is the official note phrase or sibling title itself. Source: CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a.

Code Overview

Other forms of aspergillosis is a non-billable ICD-10-CM category code (B44.8). A more specific billable subcode must be selected for claims submission.

MedCoder summary Summary composed by MedCoder from this code's official ICD-10-CM record. The tabular instructional notes themselves appear verbatim below.

Verify Before Coding

  • Not billable as written — a more specific code is required: B44.81, B44.89.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim in Claim Check.

Relationships & Classification

MedCoder-derived relationships — computed from published CMS and AHRQ datasets

Other codes that name B44.8 or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

Referenced by 1 Excludes2 note: J82 — Pulmonary eosinophilia, not elsewhere classified (via B44.-).

These codes’ tabular lists name this diagnosis as distinct — both may be reported when both are documented.

Referenced by 1 Code First instruction: M01 — Direct infections of joint in infectious and parasitic diseases classified elsewhere (via B44.-).

Each of these codes carries a Code First note naming this condition — when that code is reported, THIS code is sequenced first, ahead of it.

Referenced by 1 Code Also instruction: J4B — Pulmonary mycetoma (via B44.-).

These codes suggest coding this condition alongside when both are present.

Contextual Map

Every relationship of B44.8 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Run B44.8 with these 3 related codes in Claim Check

Hierarchy

Referenced by Excludes2 notes

Referenced by Code First instructions

Referenced by Code Also instructions

  • J4B — Pulmonary mycetoma[Code Also](via B44.-): “aspergillosis (B44.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027

Nearest codes

Change history (8)

Deep reference

Published questions and FAQ, every source behind this page with its release and checksum, the date-of-service check and the complete change history.

Common coding questions

MedCoder editorial

Can B44.8 be billed directly?

No. B44.8 (Other forms of aspergillosis) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.

Sources for this page

Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.

Code, title, tabular notes and index terms Official source data
CMS/CDC ICD-10-CM FY2027 tabular list, index and tables, effective October 1, 2026 Release, file and checksum · Publisher’s page
Claim edits Official source data
CMS Definitions of Medicare Code Edits — v44.0 (October 2026) Release, file and checksum · Publisher’s page
Change history and date-of-service validity Official source data
CMS ICD-10-CM release addenda, ingested release by release into the change ledger Release, file and checksum · Publisher’s page
Comparisons, relationships and the contextual map MedCoder-derived relationship
Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears
Summary and FAQ answers MedCoder editorial explanation
Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.

Current data releases:ICD-10-CM FY2027 · ICD-10-PCS FY2027 · HCPCS October 2026 · MS-DRG v44 · Medicare Code Editor v44.0 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 20, 2026 · All releases and sources

Labels on this page: Official source data · MedCoder-derived relationship · MedCoder editorial explanation. How to read the labels · All data sources and release dates · CMS coding rules

Cite this page

Reference this page in a research guide, syllabus or article. The release is included because code content changes each year.

MedCoder.ai. "B44.8 — Other forms of aspergillosis." ICD-10-CM FY2027. https://medcoder.ai/icd10/code/b44.8-other-forms-of-aspergillosis

Change history

Changed in FY2027, the release in force: Code Also note added; Includes note removed.

  • FY2027 — October 1, 2026
    Code Also note added
    sinus aspergilloma (J32.-)
    FY2027 changes
  • FY2027 — October 1, 2026
    Code Also note added
    pulmonary mycetoma (J4B)
    FY2027 changes
  • FY2027 — October 1, 2026
    Code Also note added
    pulmonary aspergillosis fungal ball (J4B)
    FY2027 changes
  • FY2027 — October 1, 2026
    Code Also note added
    pulmonary aspergilloma (J4B)
    FY2027 changes
  • FY2027 — October 1, 2026
    Code Also note added
    aspergilloma of other site - code to chronic infection of site
    FY2027 changes
  • FY2027 — October 1, 2026
    Code Also note added
    , if applicable:
    FY2027 changes
  • FY2027 — October 1, 2026
    Includes note removed
    aspergilloma
    FY2027 changes
  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Other forms of aspergillosis

Nearest Codes in This Family

Official ICD-10-CM classifications closest to B44.8 in its code family, with their registry titles.

View all codes in the B44 family