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Important Interim Advice from NCHS on Excludes 1 Notes
We have received several questions regarding the interpretation of Excludes1 notes in ICD-10-CM when the conditions are unrelated to one another.
Answer: If the two conditions are not related to one another, it is permissible to report both codes despite the presence of an Excludes1 note. For example, the Excludes1 note at code range R40-R46, states that symptoms and signs constituting part of a pattern of mental disorder (F01-F99) cannot be assigned with the R40-R46 codes. However, if dizziness (R42) is not a component of the mental health condition (e.g., dizziness is unrelated to bipolar disorder), then separate codes may be assigned for both dizziness and bipolar disorder. In another example, code range I60-I69 (Cerebrovascular Diseases) has an Excludes1 note for traumatic intracranial hemorrhage (S06.-). Codes in I60-I69 should not be used for a diagnosis of traumatic intracranial hemorrhage. However, if the patient has both a current traumatic intracranial hemorrhage and sequela from a previous stroke, then it would be appropriate to assign both a code from S06- and I69-.