Muscle Injuries§ 4.73Updated
Rating criteria

VA Diagnostic Code 5320Group XX. Function: Postural support of body; extension and lateral movements of spine. Spinal muscles: Sacrospinalis (erector spinae and its prolongations in thoracic and cervical regions)

Rated from 0% to 60% under § 4.73. Here is what the VA requires at each level.

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The ladder

What each rating requires

The VA assigns the highest level your evidence actually supports. Read up the stack until your records stop matching.

  1. 40%

    Cervical and thoracic region: Severe

  2. 20%

    Cervical and thoracic region: Moderately Severe

  3. 10%

    Cervical and thoracic region: Moderate

  4. 0%

    Cervical and thoracic region: Slight

  5. 60%

    Lumbar region: Severe

  6. 40%

    Lumbar region: Moderately Severe

  7. 20%

    Lumbar region: Moderate

  8. 0%

    Lumbar region: Slight

VA Disability Rating for Muscle Group XX Injuries (Diagnostic Code 5320)

Understanding Muscle Group XX

Muscle Group XX covers the spinal muscles, specifically the sacrospinalis (the erector spinae and its prolongations in the thoracic and cervical regions). These muscles are responsible for postural support of the body and the extension and lateral movements of the spine.

Injuries to this muscle group can affect your ability to hold your body upright and to bend or turn your spine. Under 38 CFR § 4.73, the VA rates these injuries as part of its schedule for Muscle Injuries.

How the VA Rates Muscle Group XX

The VA rates Group XX injuries based on which region of the spine is affected — the cervical and thoracic region, or the lumbar region — and on the severity of the injury (Slight, Moderate, Moderately Severe, or Severe).

Cervical and Thoracic Region

RatingSeverity Level
40%Severe
20%Moderately Severe
10%Moderate
0%Slight

Lumbar Region

RatingSeverity Level
60%Severe
40%Moderately Severe
20%Moderate
0%Slight

What the VA Looks For

When evaluating a Muscle Group XX injury, the VA considers:

  • The region of the spine involved — cervical and thoracic, or lumbar — since each region has its own set of rating levels.
  • The severity of the muscle injury, classified as Slight, Moderate, Moderately Severe, or Severe.

Because the function of these muscles involves postural support and the extension and lateral movements of the spine, the impact of the injury on these functions is central to how the injury is evaluated.


This information is drawn from the VA rating schedule under 38 CFR § 4.73 (Diagnostic Code 5320) and is provided for general educational purposes. Individual ratings depend on the specifics of each case.

These criteria are a rendering of § 4.73, diagnostic code 5320. The official version is the one that governs your rating.

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What next

How to claim this

Knowing the criteria is the first half. Getting your file to show them is the second.

  1. Find your level in the stack

    Read each rung against what your medical records already say. The level your records document today is the one the VA can support today.

  2. Name the gap

    Look at the rung above yours and write down exactly what it asks for that your file does not show yet — a diagnosis, a measurement, a prescribed brace, a doctor’s opinion linking it to service.

  3. Claim it by code

    File under diagnostic code 5320 and attach the evidence for the level you are asking for. Other Muscle Injuries codes may cover your secondary conditions.

Find out which rating your evidence supports.

Six reads your records against these exact criteria and tells you what the VA is still missing.

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