X-linked adrenoleukodystrophy, unspecified type

This code identifies a genetic disorder affecting the nervous system and adrenal glands, specifically X-linked adrenoleukodystrophy (X-ALD), when the specific subtype is not documented. X-ALD is characterized by the accumulation of very long-chain fatty acids (VLCFAs) in tissues, leading to progressive neurological deterioration and adrenal insufficiency.

Apply this code when a diagnosis of X-linked adrenoleukodystrophy is confirmed, but the medical record does not specify whether it is the childhood cerebral form, adrenomyeloneuropathy (AMN), or Addison-only phenotype. Documentation should clearly state "X-linked adrenoleukodystrophy" without further sub-classification.

• Avoid using this code if the specific type of X-ALD (e.g., childhood cerebral form, AMN) is documented; instead, use the more specific code.
• Always review the entire medical record for any mention of the specific X-ALD phenotype before assigning this unspecified code.
• Consider sequencing this code first if it is the primary reason for the encounter, followed by codes for associated manifestations like adrenal insufficiency or neurological symptoms.