All ICD10 Codes

M19.91

Billable
ChapterM00–M99
Ranksubcategory
Official Description

Primary osteoarthritis, unspecified site

Metadata & Insights
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (M00-M99).

Instructional Notes

Includes
  • Primary osteoarthritis NOS
General instructions are available for the parent sections:
View CH13 NotesView M15-M19 NotesView M19 Notes

Clinical Hierarchy

BillableHas subcodes
CH13Diseases of the musculoskeletal system and connective tissue (M00-M99)
M15-M19Osteoarthritis (M15-M19)
M19Other and unspecified osteoarthritis
M19.9Osteoarthritis, unspecified site
M19.91Primary osteoarthritis, unspecified siteBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to M19.91:

categoryM19
Other and unspecified osteoarthritis
View context instructions
blockM15-M19
Osteoarthritis (M15-M19)
View context instructions
chapterCH13
Diseases of the musculoskeletal system and connective tissue (M00-M99)
View context instructions

Code History

MS-DRG Classification

2026 v43.1

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

DRG 553
Bone Diseases and Arthropathies with MCC
DRG 554
Bone Diseases and Arthropathies without MCC

Cross Reference

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