2026 ICD-10-CM Diagnosis Code M34.2Systemic sclerosis induced by drug and chemical
ICD-10-CM Codes›M00–M99›M30-M36›M34
- Billable — Valid for Submission
- Not Chronic
M34.2 is a billable ICD-10-CM diagnosis code for systemic sclerosis induced by drug and chemical. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 545 through 547. Coders also document this condition as systemic sclerosis caused by chemical. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Drug induced or toxic related condition and Systemic lupus erythematosus and connective tissue disorders.
M34.2 no longer risk-adjusts for Medicare Advantage: it mapped to HCC 40 under the retired CMS-HCC V24 model through payment year 2025 but maps to no category in the live V28 model. It still risk-adjusts in the PACE (CMS-HCC V22) category 40, ESRD (V21) category 40, ESRD (V24) category 40, and RxHCC Part D (V08) category 82 for payment year 2026.
Code Identity
Code Classification
Medicare Risk Adjustment (HCC)Billing
M34.2 no longer risk-adjusts for Medicare Advantage: it maps to no payment category in the live CMS-HCC V28 model, although it still risk-adjusts in the other CMS models shown below.
Source: CMS Payment Year 2026 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.
- Systemic sclerosis caused by chemical
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Code First
Use Additional Code
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Scleroderma
Scleroderma means "hard skin." It's the name of an autoimmune disease that causes inflammation and thickening in the skin and other areas of the body. This inflammation causes you to have areas of tight, hard skin. Scleroderma may affect just one area of your body, or it can affect many systems in your body.
The full article covers:
- What is scleroderma?
- What are the types of scleroderma?
- What causes scleroderma?
- Who is more likely to develop scleroderma?
- What are the symptoms of scleroderma?
- How is scleroderma diagnosed?
- What are the treatments for scleroderma?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert M34.2 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About M34.2Overview
What is the ICD-10 code for systemic sclerosis induced by drug and chemical?
The ICD-10-CM code for systemic sclerosis induced by drug and chemical is M34.2 (sometimes written as M342). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Is M34.2 (Systemic sclerosis [scleroderma]) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report systemic sclerosis induced by drug and chemical on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does M34.2 group to?
When systemic sclerosis induced by drug and chemical is the principal diagnosis on an inpatient stay, it groups to MS-DRG 545, 546, 547, with relative weights from 0.8362 to 2.4817 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of M34.2?
Under the General Equivalence Mappings, systemic sclerosis induced by drug and chemical converts to ICD-9-CM 710.1 (systemic sclerosis). The mapping is approximate, so confirm the match fits the documentation.
Does M34.2 risk-adjust for Medicare Advantage payment?
Not for Medicare Advantage. M34.2 mapped to HCC 40 in the retired CMS-HCC V24 model, which last determined payment in 2025, but it maps to no category in the live V28 model; see all codes that no longer risk-adjust. It still risk-adjusts in the PACE (CMS-HCC V22) category 40 (Rheumatoid Arthritis and Inflammatory Connective Tissue Disease), ESRD (V21) category 40 (Rheumatoid Arthritis and Inflammatory Connective Tissue Disease), ESRD (V24) category 40 (Rheumatoid Arthritis and Inflammatory Connective Tissue Disease), and RxHCC Part D (V08) category 82 (Systemic Sclerosis).
