Specific code icon 2014 ICD-10-CM Diagnosis Code M17.9

Osteoarthritis of knee, unspecified

  • M17.9 is a billable ICD-10-CM code that can be used to specify a diagnosis.
  • On October 1, 2015 ICD-10-CM will replace ICD-9-CM in the United States, therefore, M17.9 and all other ICD-10-CM codes should only be used for training or planning purposes until then.
Clinical Information
  • Noninflammatory degenerative disease of the knee joint consisting of three large categories: conditions that block normal synchronous movement, conditions that produce abnormal pathways of motion, and conditions that cause stress concentration resulting in changes to articular cartilage. (Crenshaw, Campbell's Operative Orthopaedics, 8th ed, p2019)
Description Synonyms
  • Arthritis of left knee
  • Arthritis of right knee
Mortality Data
  • Between 1999-2007 there were 226 deaths in the United States where ICD-10 M17.9 was indicated as the underlying cause of death [source: cdc.govlink to cdc.gov]
  • ICD-10 M17.9 as underlying cause of death data broken down by: gender, age, race, year
ICD-10-CM M17.9 is grouped within Diagnostic Related Group(s) (MS-DRG v30.0):
  • 553 Bone diseases & arthropathies with mcc
  • 554 Bone diseases & arthropathies without mcc
Convert ICD-10-CM M17.9 to ICD-9-CM
The following ICD-10-CM Index entries contain back-references to ICD-10-CM M17.9: