Helicobacter pylori as the cause of diseases classd elswhr

This code identifies Helicobacter pylori as the underlying infectious agent responsible for a disease process that is classified and coded elsewhere. It signifies the bacterial etiology when H. pylori is confirmed to be the causative factor for conditions like gastritis, peptic ulcers, or certain gastric cancers.

Use this code as a secondary diagnosis when the medical record clearly documents H. pylori infection as the cause of another specific disease. This typically applies when a primary diagnosis, such as K25.x (gastric ulcer) or K29.x (gastritis and duodenitis), is also present and explicitly linked to H. pylori by diagnostic testing (e.g., breath test, stool antigen, biopsy).

• Always sequence the disease caused by H. pylori first, followed by this code as an additional diagnosis.
• Ensure documentation explicitly states H. pylori as the cause of the classified disease, not just its presence.
• Do not use this code if H. pylori is merely identified without a documented causal link to another disease classified elsewhere.