A patient is diagnosed with acute erosion of the duodenum. Which ICD-10-CM code best represents this diagnosis?

A patient is diagnosed with acute erosion of the duodenum. Which ICD-10-CM code best represents this diagnosis?

• A. K26.9
• B. K27.0
• C. K26.0
• D. K25.0

Answer: (C)

When coding duodenal conditions, ICD-10-CM uses the K26 block for duodenal ulcers and the K27 block for duodenitis/other duodenal disorders. If the report says an acute erosion of the duodenum, the closest match in coding conventions is an acute duodenal ulcer, because erosion in this region is treated as an ulcerative process in ICD-10-CM. The documentation explicitly specifies acuteness, so the code for an acute duodenal ulcer—K26.0—is the best fit. The other options point to either a non-acute or different duodenal condition (duodenitis) or to a gastric (not duodenal) ulcer, which don’t align with the site and description given.

When coding duodenal conditions, ICD-10-CM uses the K26 block for duodenal ulcers and the K27 block for duodenitis/other duodenal disorders. If the report says an acute erosion of the duodenum, the closest match in coding conventions is an acute duodenal ulcer, because erosion in this region is treated as an ulcerative process in ICD-10-CM. The documentation explicitly specifies acuteness, so the code for an acute duodenal ulcer—K26.0—is the best fit. The other options point to either a non-acute or different duodenal condition (duodenitis) or to a gastric (not duodenal) ulcer, which don’t align with the site and description given.