FY2016
Effective from
- First observed
Unequal limb length (acquired), ulna and radius
Category — select a more specific code
CDC/NCHS · FY2016For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.
Use the service date for outpatient/professional claims and the discharge date for hospital inpatient claims. Earlier encounters use ICD-9-CM; each individual code must also be valid for the applicable date.
Official coding guidelines → · CMS ↗First observed · 2015-10-01
No recorded change since first observation
Effective from
Unequal limb length (acquired), ulna and radius
Category — select a more specific code
CDC/NCHS · FY2016| All editions | Effective from | Code history |
|---|---|---|
| FY2016 | 2015-10-01 | First observed |
| FY2017 | 2016-10-01 | No tabular change |
| FY2018 | 2017-10-01 | No tabular change |
| FY2019 | 2018-10-01 | No tabular change |
| FY2020 | 2019-10-01 | No tabular change |
| FY2020 · April | 2020-04-01 | No tabular change |
| FY2021 | 2020-10-01 | No tabular change |
| FY2021 · 01-01 | 2021-01-01 | No tabular change |
| FY2022 | 2021-10-01 | No tabular change |
| FY2022 · 04-01 | 2022-04-01 | No tabular change |
| FY2023 | 2022-10-01 | No tabular change |
| FY2023 · 04-01 | 2023-04-01 | No tabular change |
| FY2024 | 2023-10-01 | No tabular change |
| FY2024 · 04-01 | 2024-04-01 | No tabular change |
| FY2025 | 2024-10-01 | No tabular change |
| FY2025 · 04-01 | 2025-04-01 | No tabular change |
| FY2026 | 2025-10-01 | No tabular change |
| FY2026 · April | 2026-04-01 | No tabular change |
| FY2027 | 2026-10-01 | No tabular change |
The official Tabular List has no additional instructions at this code level.
Review the instructions inherited from its parent categories below. Inherited instructions ↓
Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Disorders affecting predominantly peripheral (limb) joints
The site used should correspond to the shorter limb
M21.731Unequal limb length (acquired), right ulnaBillable / specificM21.732Unequal limb length (acquired), left ulnaBillable / specificM21.733Unequal limb length (acquired), right radiusBillable / specificM21.734Unequal limb length (acquired), left radiusBillable / specificM21.739Unequal limb length (acquired), unspecified ulna and radiusBillable / specificOther entries in the same category; these are not automatic substitutes.
| Code | Description | Category · further specificity required |
|---|---|---|
| M21.70 | Unequal limb length (acquired), unspecified site | Billable / specific |
| M21.72 | Unequal limb length (acquired), humerus | Category · further specificity required |
| M21.75 | Unequal limb length (acquired), femur | Category · further specificity required |
| M21.76 | Unequal limb length (acquired), tibia and fibula | Category · further specificity required |
Official titles and instructions are preserved in their source language. Official sources ↗