What is ICD-10 code B41.9?

B41.9 is the ICD-10-CM diagnosis code for Paracoccidioidomycosis, unspecified. It belongs to the ICD-10-CM chapter for certain infectious and parasitic diseases (a00-b99). B41.9 is a billable code, meaning it can be reported on a claim as a primary or secondary diagnosis when supported by documentation. B41.9 is part of the FY2026 ICD-10-CM code set published by the CMS National Center for Health Statistics and used on Medicare, Medicaid, and commercial claims in the United States.

Yes. B41.9 is a billable ICD-10-CM code that can be reported on professional and institutional claims as a primary or secondary diagnosis when the provider documentation supports the specific condition described. Billable codes in ICD-10-CM are coded to the highest level of specificity available for the documented diagnosis. B41.9 is current for fiscal year 2026 and remains in the active CMS ICD-10-CM code set published by the National Center for Health Statistics.

Which HCC does B41.9 map to under V28?

B41.9 has no payable CMS-HCC V28 mapping in the final FY2026 CMS file.

What RAF reference is published for B41.9?

B41.9 has no V28 reference coefficient because the final FY2026 source verifies no payable V28 mapping.

What is the V28 vs V24 difference for B41.9?

B41.9 has verified no payable V28 mapping in the final FY2026 source. Select a historical effective period before making any V24 comparison.

2026 ICD-10-CM B41.9: Paracoccidioidomycosis, unspecified

B41.9 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · HCC Buddy coding tools

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Code lookupB41.9

Effective periodFY2026 Apr Update (Apr 1-Sep 30)

FY 2026 Apr update / Certain infectious and parasitic diseases (A00-B99) / Mycoses (B35-B49)

B41.9

Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidance

Paracoccidioidomycosis, unspecified

A fungal infection caused by the Paracoccidioides fungus that can affect various parts of the body, but the specific location or type is not documented. This is a serious infection primarily found in Central and South America that can affect the lungs, skin, and other organs.

Overview Risk Models Code Book Documentation Audit Notes Edition comparison

CMS-HCC V28

N/A

—

Not risk-adjusted for this model/period.

Not mapped

CMS-HCC V24

Historical

Not used for standard CY2026 Medicare Advantage payment. Select a historical period to review V24.

Not used for CY2026 payment

ACA/HHS

N/A

—

Not risk-adjusted for this model/period.

Not mapped

ESRD/PACE

N/A

—

Not risk-adjusted for this model/period.

Not mapped

RXHCC

N/A

—

Not risk-adjusted for this model/period.

Not mapped

Code Book Path

Official

B41Paracoccidioidomycosis B41.9Paracoccidioidomycosis, unspecified

Inclusion Terms

Official

No inclusion terms are included in this display for B41.9. Check the code and parent instructions in the Code Book.

Excludes 2

Official

carrier or suspected carrier of infectious disease (Z22.-)Inherited from A00-B99, B35-B49
infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)Inherited from A00-B99, B35-B49
infectious and parasitic diseases specific to the perinatal period (P35-P39)Inherited from A00-B99, B35-B49
influenza and other acute respiratory infections (J00-J22)Inherited from A00-B99, B35-B49
hypersensitivity pneumonitis due to organic dust (J67.-)Inherited from A00-B99, B35-B49
mycosis fungoides (C84.0-)Inherited from A00-B99, B35-B49

Related Codes

Official

B41.0Pulmonary paracoccidioidomycosis B41.7Disseminated paracoccidioidomycosis B41.8Other forms of paracoccidioidomycosis

Includes

Official

diseases generally recognized as communicable or transmissibleInherited from A00-B99, B41
Brazilian blastomycosisInherited from A00-B99, B41
Lutz' diseaseInherited from A00-B99, B41

Excludes 1

Official

certain localized infections - see body system-related chaptersInherited from A00-B99

Code First

Official

No Code First sequencing instructions are included in this display for B41.9. Check the code and parent instructions in the Code Book.

Use Additional

Official

code to identify resistance to antimicrobial drugs (Z16.-)Inherited from A00-B99

Code Also

Official

No Code Also instructions are included in this display for B41.9. Check the code and parent instructions in the Code Book.

Buddy Documentation Tip

HCC Buddy guidance

Use this code only when the medical record does not specify the anatomical site or form of paracoccidioidomycosis; if a specific site is documented (pulmonary, cutaneous, etc.), use the more specific B41 subcategory codes instead

This code requires documentation of paracoccidioidomycosis diagnosis; verify the fungal organism is confirmed as Paracoccidioides and consider querying the provider if the site of infection is not clearly stated, as more specific coding may be appropriate

Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →

Is B41.9 an HCC code?

No. B41.9 is a billable ICD-10-CM code with no mapping under the CMS-HCC V28 or V24 community payment models, and none under the ESRD, Part D RxHCC, or HHS-HCC models.

Code: B41.9
Description: Paracoccidioidomycosis, unspecified
HCC (V28): No CMS-HCC V28 mapping
RAF reference coefficient: —
Billable: Yes
Payment year: 2026

Coder workflow notes

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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

B41.9 is the ICD-10-CM diagnosis code for paracoccidioidomycosis, unspecified. A fungal infection caused by the Paracoccidioides fungus that can affect various parts of the body, but the specific location or type is not documented. This is a serious infection primarily found in Central and South America that can affect the lungs, skin, and other organs. B41.9 sits in the ICD-10-CM chapter for certain infectious and parasitic diseases (a00-b99), within the section covering mycoses (b35-b49).

B41.9 is a billable ICD-10-CM code, but the current payload does not show a mapping under the CMS-HCC V28 or V24 community payment models, and none under the ESRD, Part D RxHCC, or HHS-HCC models. Do not assign risk adjustment value from this page when no source-backed mapping is shown; verify the applicable model and payment year.

HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for B41.9 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

•Use this code only when the medical record does not specify the anatomical site or form of paracoccidioidomycosis; if a specific site is documented (pulmonary, cutaneous, etc.), use the more specific B41 subcategory codes instead
•This code requires documentation of paracoccidioidomycosis diagnosis; verify the fungal organism is confirmed as Paracoccidioides and consider querying the provider if the site of infection is not clearly stated, as more specific coding may be appropriate