2027 ICD-10-CM Diagnosis Code M34.83Systemic sclerosis with polyneuropathy
ICD-10-CM Codes›M00–M99›M30-M36›M34
- Billable — Valid for Submission
- Risk Adjusts — HCC 93
- Chronic Condition
M34.83 is a billable ICD-10-CM diagnosis code for systemic sclerosis with polyneuropathy. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 73 through 74. Coders also document this condition as polyneuropathy due to systemic sclerosis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Polyneuropathies and Systemic lupus erythematosus and connective tissue disorders.
For Medicare Advantage risk adjustment, M34.83 maps to CMS-HCC Category 93 (Rheumatoid Arthritis and Other Specified Inflammatory Rheumatic Disorders) under the V28 model, adding a risk factor of about 0.617 for a community, non-dual, aged beneficiary in payment year 2027.
Code Identity
Code Classification
Medicare Risk Adjustment (HCC)Billing
M34.83 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.
- Polyneuropathy due to systemic sclerosis
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to M34.83: its own notes plus those printed at M34, block M30-M36, and Chapter 13. 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.
- autoimmune disease NOS
- collagen (vascular) disease NOS
- systemic autoimmune disease
- systemic collagen (vascular) disease
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
- autoimmune disease, single organ or single cell-type -code to relevant condition category
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.
- arthropathic psoriasis (L40.5-)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- compartment syndrome (traumatic) (T79.A-)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Notes
General instructions on how these codes are used.
- Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name M34.83, its category, or a range that includes it.
Excludes1 4
These codes carry an Excludes1 note naming M34.83: they are not reported together with it, unless the two conditions are unrelated.
- G63 Polyneuropathy in diseases classified elsewherescleroderma (M34.83)
- L93 Lupus erythematosusscleroderma (M34.-) names M34.-, which includes this code
- Block M60-M63 Disorders of musclesmyopathy in scleroderma (M34.-) names M34.-, which includes this code
- L94 Other localized connective tissue disorders
Excludes2 4
These codes carry an Excludes2 note naming M34.83: its condition is not part of those codes, and both may be reported when the patient has both.
- Chapter 9 (I00-I99) Diseases of the circulatory system
- I77 Other disorders of arteries and arterioles
- J82 Pulmonary eosinophilia, not elsewhere classified
- Chapter 12 (L00-L99) Diseases of the skin and subcutaneous tissue
Code First 2
These codes say to code first a condition named in the note, and M34.83 is one of the conditions named.
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
Peripheral Nerve Disorders
Nerves are like wires that carry messages back and forth between your brain and your body. Your peripheral nerves branch off from your brain and spinal cord and connect to all parts of your body, including your muscles and organs.
The full article covers:
- What are peripheral nerves?
- What are peripheral nerve disorders?
- What causes peripheral nerve disorders?
- What are the symptoms of peripheral nerve disorders?
- How are peripheral nerve disorders diagnosed?
- What are the treatments for peripheral nerve disorders?
- Can peripheral nerve disorders be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert M34.83 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About M34.83Overview
What is the ICD-10 code for systemic sclerosis with polyneuropathy?
The ICD-10-CM code for systemic sclerosis with polyneuropathy is M34.83 (sometimes written as M3483). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is M34.83 (Other forms of systemic sclerosis) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report systemic sclerosis with polyneuropathy on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does M34.83 group to?
When systemic sclerosis with polyneuropathy is the principal diagnosis on an inpatient stay, it groups to MS-DRG 74, 73, with relative weights from 1.0172 to 1.5773 depending on complications. Higher weights mean higher Medicare reimbursement.
Can M34.83 be reported with L94.0?
Not as a rule. The Excludes1 note at M34, which applies to M34.83, lists "circumscribed scleroderma (L94.0)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
What is the ICD-9 equivalent of M34.83?
Under the General Equivalence Mappings, systemic sclerosis with polyneuropathy converts to ICD-9-CM 710.1 (systemic sclerosis) and 357.4 (neuropathy in other dis). The mapping is approximate, so confirm the match fits the documentation.
What HCC is M34.83?
M34.83 (systemic sclerosis with polyneuropathy) maps to CMS-HCC Category 93 (Rheumatoid Arthritis and Other Specified Inflammatory Rheumatic Disorders), commonly written as HCC 93, in the CMS-HCC V28 model used for Medicare Advantage risk adjustment in payment year 2027. It mapped to HCC 40 under the retired V24 model. It also maps in the PACE (CMS-HCC V22), ESRD (V21), and ESRD (V24) models. In the Part D prescription drug model it maps to RxHCC 158.
Does M34.83 risk-adjust for Medicare Advantage payment?
Yes. When documented and reported on a Medicare Advantage encounter, M34.83 adds a risk adjustment factor of about 0.617 to the beneficiary's RAF score for a community, non-dual, aged enrollee (published V28 weights range from 0.288 to 0.617 depending on the payment segment). HCC 93 sits at the top of its hierarchy, so no other condition category supersedes it. See the full factor table on the HCC 93 category page.
