All ICD10 Codes

M05.9

Billable
ChapterM00–M99
Ranksubcategory
Official Description

Rheumatoid arthritis with rheumatoid factor, unspecified

Metadata & Insights
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (M00-M99).
General instructions are available for the parent sections:
View CH13 NotesView M05 Notes

Clinical Hierarchy

BillableHas subcodes
CH13Diseases of the musculoskeletal system and connective tissue (M00-M99)
M05-M14Inflammatory polyarthropathies (M05-M14)
M05Rheumatoid arthritis with rheumatoid factor
M05.9Rheumatoid arthritis with rheumatoid factor, unspecifiedBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to M05.9:

categoryM05
Rheumatoid arthritis with rheumatoid factor
View context instructions
chapterCH13
Diseases of the musculoskeletal system and connective tissue (M00-M99)
View context instructions

Code History

  • FY 2025: Superseded by M05.A

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 545
Connective Tissue Disorders with MCC
DRG 546
Connective Tissue Disorders with CC
DRG 547
Connective Tissue Disorders without CC/MCC

Cross Reference

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