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5321 – Group XXI Function: Respiration

Note (1): When evaluating any claim involving muscle injuries resulting in loss of use of any extremity or loss of use of both buttocks (diagnostic code 5317, Muscle Group XVII), refer to § 3.350 of this chapter to determine whether the veteran may be entitled to special monthly compensation.

Note (2): Ratings of slight, moderate, moderately severe, or severe for diagnostic codes 5301 through 5323 will be determined based upon the criteria contained in § 4.56.

Rating Criteria Rating
5321 Group XXI. Function: Respiration. Muscles of respiration: Thoracic muscle group
Severe or Moderately Severe 20
Moderate 10
Slight 0