99231 Subsequent hospital or observation care, straightforward or low complexityCPT · BillingBrief summaryA follow-up inpatient or observation visit with straightforward or low-complexity medical decision making.Copy codeWhat to knowTime threshold: 25 minutes or more.Related codes99232 Subsequent hospital or observation care, moderate complexity CPT99233 Subsequent hospital or observation care, high complexity CPT99221 Initial hospital or observation care, straightforward or low complexity CPT
