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Work group debates including TBI, dementia G‑codes and Z‑codes in behavioral health definition
Summary
Members discussed whether to include traumatic brain injury diagnoses, G‑codes for underlying neurological disorders, and Z‑codes (social determinants) in the behavioral health code set; clinicians said coding practice and payment constraints affect how conditions appear on claims.
The work group reviewed which diagnosis codes should count a claim as behavioral health spending and considered three contested categories: traumatic brain injury (TBI), G‑codes for neurological disorders that can cause dementia, and Z‑codes used to document social determinants of health.
OCAH staff recommended excluding TBI from the behavioral health diagnosis list, saying inclusion might capture primarily medical spend and clinicians advised that behavioral symptoms related to TBI are usually coded under behavioral health diagnoses (for example,…
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