ICD-9-CM diagnosis code (retired)
813.33 — Open fracture of shaft of radius with ulna
About ICD-9-CM 813.33
813.33 is an ICD-9-CM diagnosis code for open fracture of shaft of radius with ulna. ICD-9-CM was retired for U.S. claims on October 1, 2015, when ICD-10-CM took over.
The CMS General Equivalence Mappings translate it to 4 ICD-10-CM codes, such as S52.209B (Unspecified fracture of shaft of unspecified ulna, initial encounter for open fracture type I or II), S52.209C (Unspecified fracture of shaft of unspecified ulna, initial encounter for open fracture type IIIA, IIIB, or IIIC) and S52.309B (Unspecified fracture of shaft of unspecified radius, initial encounter for open fracture type I or II). All of these are approximate matches, so review the record to pick the right one. Some mappings are combinations: more than one ICD-10 code is needed to fully express the ICD-9 code.
ICD-10-CM equivalents
- S52.209BUnspecified fracture of shaft of unspecified ulna, initial encounter for open fracture type I or IIapproximate · combination (scenario 1, choice 1)
- S52.209CUnspecified fracture of shaft of unspecified ulna, initial encounter for open fracture type IIIA, IIIB, or IIICapproximate · combination (scenario 1, choice 1)
- S52.309BUnspecified fracture of shaft of unspecified radius, initial encounter for open fracture type I or IIapproximate · combination (scenario 1, choice 2)
- S52.309CUnspecified fracture of shaft of unspecified radius, initial encounter for open fracture type IIIA, IIIB, or IIICapproximate · combination (scenario 1, choice 2)
Common questions about 813.33
GEMs are a translation aid, not a substitute for coding from the record. The 2027 ICD-10 code set has changed since the last GEMs release in 2018. Page updated September 29, 2026.