Free Medical Coding > ICD10 CM > 2024 ICD-10-CM Codes > 2024 ICD-10-CM Codes K00-K95 – Diseases of the digestive system (K00-K95) > 2024 ICD-10-CM Codes K20-K31 – Diseases of esophagus, stomach and duodenum (K20-K31) > 2024 ICD-10-CM Codes K29 – Gastritis and duodenitis (K29) > 2024 ICD-10-CM Codes K29.9 – Gastroduodenitis, unspecified (K29.9)