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Vitamin D Deficiency VA Disability Rating is rated by the U.S. Department of Veterans Affairs under DC 6399 of 38 C.F.R. § 4.88b across 4 severity tiers (100% -- Severe systemic involvement / 60% -- Significant systemic involvement / 30% -- Moderate symptoms requiring continuous medication / 10% -- Mild symptoms or medication-controlled). Service connection requires (1) a current diagnosis, (2) an in-service event, injury, or exposure, and (3) a medical nexus opinion linking the two under 38 C.F.R. § 3.303.
Vitamin D deficiency may be rated by analogy if causing functional impairment. Often secondary to medications, limited sun exposure during service, or GI conditions affecting absorption.
Vitamin D Deficiency (DC 6399) is evaluated under 38 C.F.R. § 4.88b using the endocrine rating framework. Because it is rated by analogy to the general schedule, the 4 levels below describe the body-system criteria the VA applies — the percentage assigned to Vitamin D Deficiency depends on the specific findings (range of motion, frequency, severity, or functional loss) documented at the C&P exam and in the medical record.
Rating criteria reference 38 C.F.R. Part 4 (Schedule for Rating Disabilities). This entry has not yet undergone editorial review against the live regulation text — consult the authoritative source directly before relying on the criteria shown.