M20 Acquired deformities of fingers and toes

The ICD-10-CM code for Acquired deformities of fingers and toes is M20 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Chapter

13: Diseases of the musculoskeletal system and connective tissue (M00-M99)

Section

M20-M25: Other joint disorders (M20-M25)

Category M20

47 codes (33 billable)

FY2026 Status

Stable since FY2024

Official Coding Guidelines

Osteoporosis without pathological fracture (M81)

Category M81, Osteoporosis without current pathological fracture, is for use for patients with osteoporosis who do not currently have a pathologic fracture due to the osteoporosis, even if they have had a fracture in the past. For patients with a history of osteoporosis fractures, status code Z87.310, Personal history of (healed) osteoporosis fracture, should follow the code from M81.

Osteoporosis with current pathological fracture (M80)

Category M80, Osteoporosis with current pathological fracture, is for patients who have a current pathologic fracture at the time of an encounter. The codes under M80 identify the site of the fracture. A code from category M80, not a traumatic fracture code, should be used for any patient with known osteoporosis who suffers a fracture, even if the patient had a minor fall or trauma, if that fall or trauma would not usually break a normal, healthy bone.

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool

Cite This Page

Reference M20 with the canonical source and edition:

M20 — Acquired deformities of fingers and toes. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/M20

Canonical URL: https://icd10codingpro.com/codes/M20