Question: We treated a patient with multiple fractured ribs and we reported a six-character code, but the claim was denied because we should have billed a seven-character diagnosis. We didn't see a seventh character option. Can you advise? Codify Subscriber Answer: When your physician treats multiple rib fractures, you'll likely link the CPT® code to a diagnosis code in the S22.4-- group, depending on the laterality and number of fractures: These ICD-10 codes are: Also: Be sure to add the appropriate seventh character to each code in the S22 category: Unfortunately, without these seventh-character letters added, the claim will likely reject as having a truncated ICD-10 code. In most cases, an emergency department will apply either "A" or "B" since you aren't as likely to see a patient for a subsequent encounter or sequela.