M24.173 Other articular cartilage disorders, unspecified ankle

Billable ICD-10-CM code, FY2026.

Applies from M24 Other specific joint derangements

Excludes1 (never code together)

• current injury - see injury of joint by body region

Excludes2 (not included here)

• ganglion (M67.4)
• snapping knee (M23.8-)
• temporomandibular joint disorders (M26.6-)

Applies from M24.1 Other articular cartilage disorders

Excludes2 (not included here)

• chondrocalcinosis (M11.1-, M11.2-)
• internal derangement of knee (M23.-)
• metastatic calcification (E83.59)
• ochronosis (E70.29)

MS-DRG index

Defines the logic of DRG(s) 562-563 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 718.07 Articular cartilage disorder, ankle and foot (approximate)

Nearby codes

• M24.152 Other articular cartilage disorders, left hip
• M24.159 Other articular cartilage disorders, unspecified hip
• M24.17 Other articular cartilage disorders, ankle and foot
• M24.171 Other articular cartilage disorders, right ankle
• M24.172 Other articular cartilage disorders, left ankle
• M24.173 Other articular cartilage disorders, unspecified ankle (this code)
• M24.174 Other articular cartilage disorders, right foot
• M24.175 Other articular cartilage disorders, left foot
• M24.176 Other articular cartilage disorders, unspecified foot
• M24.19 Other articular cartilage disorders, other specified site
• M24.2 Disorder of ligament