The German procedure classification (Operationen- und Prozedurenschlüssel - OPS) is the official classification for the encoding of operations, procedures and general medical measures.
The currently valid version is OPS 2021.
Official classification for operations and procedures
DIMDI publishes the OPS classification on behalf of the Federal Ministry of Health; it is in the public domain. Its use in inpatient care is laid down in § 301 Volume V of the German Social Security Code (SGB V) and for surgical procedures in the outpatient sector in § 295 SGB V.
Structure of OPS
OPS consists of two parts:
- Tabular List: consisting of the hierarchically ordered list of codes together with supplementary information: The preface contains information about the encoding process and a commentary on the most important changes compared to the previous version. The appendix contains instructions on the calculation of expenditure points for complex intensive care treatment.
- Alphabetical Index: as a collection of designations of operations and other procedures that can be encrypted with the official OPS (each with associated code); as of version 2021, the Alphabetical Index will be provided exclusively as TXT(CSV) version, a version as ODT or PDF will no longer exist.
The preface of OPS contains information for its use. However, priority in application has to be given to sector-specific encoding guidelines.
Proposal procedure for OPS and ICD-10-GM
OPS is maintained and updated in an elaborate process. At present, this is based on a proposal procedure conducted annually under the lead management of BfArM.