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Diagnostic Code 5320: Group XX. Function
Muscle Injuries · 38 CFR §4.73 · All codes in this system
| Evaluation criteria | Rating |
|---|---|
| Postural support of body; extension and lateral movements of spine. Spinal muscles: Sacrospinalis (erector spinae and its prolongations in thoracic and cervical regions) | |
| Cervical and thoracic region: | |
| Severe | 40% |
| Moderately Severe | 20% |
| Moderate | 10% |
| Slight | 0% |
| Lumbar region: | |
| Severe | 60% |
| Moderately Severe | 40% |
| Moderate | 20% |
| Slight | 0% |
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Source: eCFR Title 38, 38 CFR §4.73, current as of 2026-11-05. Criteria text is the regulatory text, reproduced verbatim for reference; it is not legal advice.