2027 ICD-10-CM Diagnosis Code B42.82Sporotrichosis arthritis
ICD-10-CM Codes›A00–B99›B35-B49›B42
- Billable — Valid for Submission
- Risk Adjusts — HCC 92
- Chronic Condition
B42.82 is a billable ICD-10-CM diagnosis code for sporotrichosis arthritis. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 867 through 869. Coders also document this condition as arthropathy associated with a mycosis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Fungal infections and Infective arthritis.
For Medicare Advantage risk adjustment, B42.82 maps to CMS-HCC Category 92 (Bone/Joint/Muscle/Severe Soft Tissue Infections/Necrosis) under the V28 model, adding a risk factor of about 0.479 for a community, non-dual, aged beneficiary in payment year 2027.
Code Identity
Code Classification
Medicare Risk Adjustment (HCC)Billing
B42.82 maps to a payment category in the CMS-HCC model used to risk-adjust Medicare Advantage payments. Weights are the published community factors for payment year 2027.
Source: CMS Payment Year 2027 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Arthropathy associated with a mycosis
- Sporotrichosis arthritis
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to B42.82: its own notes plus those printed at block B35-B49 and Chapter 1. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- diseases generally recognized as communicable or transmissible
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- carrier or suspected carrier of infectious disease (Z22.-)
- certain localized infections - see body system-related chapters
- 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
Add a second code, after this one, to fully describe the condition.
- code to identify resistance to antimicrobial drugs (Z16.-)
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
arthritis B42.82
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Sporotrichosis
the commonest and least serious of the deep mycoses, characterized by nodular lesions of the cutaneous and subcutaneous tissues. it is caused by inhalation of contaminated dust or by infection of a wound with sporothrix.
Patient EducationClinical
Fungal Infections
If you have ever had athlete's foot or a yeast infection, you can blame a fungus. A fungus is a primitive organism. Mushrooms, mold and mildew are examples. Fungi live in air, in soil, on plants and in water. Some live in the human body. Only about half of all types of fungi are harmful.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert B42.82 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About B42.82Overview
What is the ICD-10 code for sporotrichosis arthritis?
The ICD-10-CM code for sporotrichosis arthritis is B42.82 (sometimes written as B4282). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is B42.82 (Other forms of sporotrichosis) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report sporotrichosis arthritis on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does B42.82 group to?
When sporotrichosis arthritis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 867, 869, 868, with relative weights from 0.6784 to 2.1855 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of B42.82?
Under the General Equivalence Mappings, sporotrichosis arthritis converts to ICD-9-CM 117.1 (sporotrichosis). The mapping is approximate, so confirm the match fits the documentation.
What HCC is B42.82?
B42.82 (sporotrichosis arthritis) maps to CMS-HCC Category 92 (Bone/Joint/Muscle/Severe Soft Tissue Infections/Necrosis), commonly written as HCC 92, in the CMS-HCC V28 model used for Medicare Advantage risk adjustment in payment year 2027. It mapped to HCC 39 under the retired V24 model. It also maps in the PACE (CMS-HCC V22), ESRD (V21), and ESRD (V24) models. It does not map to any RxHCC in the Part D prescription drug model.
Does B42.82 risk-adjust for Medicare Advantage payment?
Yes. When documented and reported on a Medicare Advantage encounter, B42.82 adds a risk adjustment factor of about 0.479 to the beneficiary's RAF score for a community, non-dual, aged enrollee (published V28 weights range from 0.471 to 0.632 depending on the payment segment). HCC 92 sits at the top of its hierarchy, so no other condition category supersedes it. See the full factor table on the HCC 92 category page.
