The appropriate action is to query the provider regarding the patient's nutritional diagnosis. The dietitian's assessment supplies important clinical evidence, but the associated diagnosis of malnutrition generally must be documented by an appropriate provider before the diagnosis code is assigned.

The FY 2026 ICD-10-CM Official Guidelines permit selected elements to come from non-provider clinicians—such as BMI, pressure-ulcer stage, coma scale, NIH Stroke Scale, certain social determinants, and other specifically identified exceptions. Malnutrition diagnosis itself is not simply assigned solely from a dietitian's diagnostic statement under this general rule.

Ignoring the dietitian's findings would also be inappropriate. CDI review should integrate multidisciplinary documentation because such documentation can reveal valid clarification opportunities. Severe weight loss, reduced intake, and documented muscle depletion provide a clinical basis for a neutral query.

The query should not state that severe malnutrition “must” be documented because it is an MCC. Instead, it should present the relevant nutrition findings and allow the provider to determine the diagnosis, including severe malnutrition, another level of malnutrition, another cause, or inability to determine.

CCDS Reference Topics: Malnutrition; multidisciplinary documentation; provider diagnosis requirements; clinical indicators.

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