ICD-10 Map Overview

Purpose

The SNOMED CT to ICD-10 map is intended to:

• leverage electronic health records, encoded using SNOMED CT, to output relevant ICD-10 codes via semi-automated clinical coding

• aid in the allocation of ICD-10 codes from SNOMED CT encoded records for use in registries and diagnosis groupers

• serve as a basis for the derivation of maps to any of the ICD-10 modifications developed and maintained by member countries

What the Map is Not

It must be understood that the map does not provide:

• a complete automation of ICD-10 clinical coding from a SNOMED CT source

• support for social, cultural, ethical or financial constraints on ICD-10 coding required by members or other organizations

• management of context beyond that found in the source terms and ICD-10 rules and conventions

• optimization of ICD-10 codes for billing and reimbursement purposes

Audience for the Map

Users of the map will include SNOMED International Members and Affiliates that:

• have deployed, or are deploying, SNOMED CT in clinical information systems

• use the 2016 version of ICD-10 (also known as the Fifth Edition) in systems for purposes of statistical reporting, epidemiology, cancer, injury and other registries, quality reporting, safety reporting, and research.

The map can also support use by WHO Collaborating Centers in jurisdictions where SNOMED CT is deployed or is being deployed.

Supported Use Case

Map with patient context management

Patient Jones is being discharged from the hospital. The attending physician has maintained a diagnosis and health-related problem list coded in SNOMED CT during the stay and updates the entries at discharge.

The vendor software employs the map, which uses a knowledge-based algorithm of sequential computable Map Rules. These rules evaluate context (data recorded about the patient in the electronic health record) and co-morbidities in the electronic record to identify the most appropriate candidate ICD-10 code list based on ICD-10 exclusion / inclusion guidance and other conventions.

Vendor software which cannot employ these knowledge-based features can employ the helpful mapAdvice to provide a readable and understandable list of step-by-step instructions for the physician to support a choice of an ICD-10 code.

The ICD-10 coding professional later reviews and edits the classification code list prior to submission for statistical morbidity reporting. The mapAdvice data further guides them with information regarding additional WHO rubrics and requirements.

Authoritative Resources

The map is based on the latest monthly release of the SNOMED CT International Edition, as distributed by SNOMED International, and uses the 2016 version of ICD-10, as published and maintained by the World Health Organization, as the target classification. The map is updated for each new release of SNOMED CT.