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Application of OPS

In the following, you find instructions on the application rules that apply and the use of OPS. In addition, we provide some examples on the purposes of encoding according to OPS.

Rules for the application of OPS

In addition to the "Hinweise für die Benutzung" (notes on how to use OPS) in the preface of OPS, priority consideration is to be given to sector-specific encoding guidelines ("Deutsche Kodierrichlinien"). More information is available in the brochure "Basiswissen Kodieren" (Basic Encoding Knowledge) and the FAQs. All of them are only available in German language.

Notes on how to use OPS in the Tabular List

The preface to the Tabular List contains notes on how to use the index; they are also included in the online versions under "Zusatzinformationen" (Supplementary Information). They describe what is encoded and how it is done as well as which additional designators have to be used where.

Basic Knowledge Encoding brochure

The brochure provides a brief introduction to the use of OPS and ICD-10-GM.

Brochure "Basiswissen Kodieren" (PDF, 530 kB) (in German language)


Some code-specific questions are dealt with in the FAQs on OPS. Special information is provided for the complex codes pertaining to psychiatry and psychosomatics.

Priority: "Deutsche Kodierrichtlinien" - German Coding Guidelines of the self-governing partners

For encoding in inpatient health care (§ 301 SGB V), priority consideration is to be given to the German Coding Guidelines (DKR) by self-governing partners, provided by InEK. Since 2010, separate coding guidelines apply to psychiatric and psychosomatic institutions. You find the "Kodierrichtlinien" on the InEK website on the folder G-DRG-System and PEPP-Entgeltsystem of the respective year.

Deutsche Kodierrichtlinen DKR und DKR-Psych (German Coding Guidelines) on the website of InEK (in German language)

Encoding using OPS - a practical example

In a practical example, we provide a step-by-step explanation of how to proceed:

How do you encode using OPS?

Use of OPS encoded data

We illustrate the benefits of encoding according to OPS for some sample areas of application:

What is the purpose of encoding using OPS?