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Acute and chronic glomerulonephritis is coded and sequenced as: 580.9, 582.9. Explain why we need both codes and why they must be in this order.
What is OGCR B.10: If the same condition is described as both acute (subacute) and chronic, and separate subentries exist in the Alphabetical Index at the same indentation level, code both and sequence the acute (subacute) code first.