M70.042 (Crepitant synovitis (acute) (chronic), left hand) compared with M70.049 (Crepitant synovitis (acute) (chronic), unspecified hand), from the official CMS tabular data. M70.042 and M70.049 code the same condition on opposite sides. MedCoder-derived
Same condition; these differ only in which side is documented.
These codes share a category and title and differ only in the side affected. The documentation decides which applies, and a bilateral code is reported only where the code set provides one.
Source: ICD-10-CM tabular list (laterality variant derived from the code title)
Same condition, opposite side. M70.042 and M70.049 name the same condition on opposite sides of the body.
Same category and title, differing only in which side is affected — the documentation decides which one applies, and a bilateral code is reported only where the code set provides one.
| M70.042Crepitant synovitis (acute) (chronic), left hand | M70.049Crepitant synovitis (acute) (chronic), unspecified hand | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | M00-M99 — Diseases of the musculoskeletal system and connective tissue | M00-M99 — Diseases of the musculoskeletal system and connective tissue |
| Definition | Crepitant synovitis (acute) (chronic), left hand is a billable ICD-10-CM diagnosis code (M70.042). | Crepitant synovitis (acute) (chronic), unspecified hand is a billable ICD-10-CM diagnosis code (M70.049). |
| Includes | soft tissue disorders of occupational origin | soft tissue disorders of occupational origin |
| Use additional code | external cause code to identify activity causing disorder (Y93.-) | external cause code to identify activity causing disorder (Y93.-) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources