ICD-10 Code E56.8 – Deficiency of other vitamins (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E56.8 – Deficiency of other vitamins
What it is
E56.8 identifies a deficiency of a vitamin not otherwise classified in the ICD-10-CM category. Use it when the record documents a specific vitamin deficiency outside the more common coded options.
Clinical signs
Clinical features vary by the missing vitamin and may include nonspecific findings such as fatigue, poor nutrition, or other deficiency-related symptoms. Check documentation for the exact vitamin involved and any confirmed manifestations.
When to use this code
Use E56.8 when the provider documents deficiency of “other vitamins” or names a vitamin deficiency that does not have a more specific ICD-10-CM code. It may also fit when the chart confirms a vitamin deficiency but does not support a more detailed code. Do not assume the vitamin type; code only what is documented.
Do not use for
Do not use this code for common vitamin deficiencies that have their own specific codes, or when the record only says “vitamin deficiency” without further detail. Check documentation if the vitamin type is unclear.
Coding tip
Look for the exact vitamin named in the assessment and choose the most specific code available before defaulting to E56.8.