DA51.4Level 5

Duodenitis of unknown aetiology with specific endoscopic or pathologic features

**Definition:** Duodenitis of unknown etiology showing specific endoscopic or pathological findings, including acute haemorrhagic duodenitis and Granulomatous duodenitis.

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DA51.40Acute haemorrhagic duodenitis of unknown aetiology

DA51.41Granulomatous duodenitis of unknown aetiology

DA51.4ZDuodenitis of unknown aetiology with specific endoscopic or pathologic features, unspecified

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