kode icd 10 gea2025 ICD-10-CM Index › 'G' Terms › Index Terms Starting With 'G' (Gastroenteritis) Index Terms Starting With 'G' (Gastroenteritis) Gastroenteritis (acute) (chronic) (noninfectious) K52.9K21.9 is a billablespecific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM K21.9 became effective on October