LOINC Code 46511-2: Deprecated Primary diagnosis ICD code [CMS Assessment]

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Primary diagnosis ICD code. It is commonly used with the system or sample type ^Patient.

When is it used?

• Used in lab systems, EHRs, and clinical data exchange.
• May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
• Status: DEPRECATED
• Order vs observation: Observation
• Method: CMS Assessment

What it does not mean

• The code identifies the observation or test, not the actual result.

Key facts

• Deprecated Primary diagnosis ICD code [CMS Assessment]
• Primary diagnosis ICD code
• Identifies diagnosis for which the patient is receiving care and its ICD code. The primary diagnosis should be the condition that is the chief reason for providing care.
• Centers for Medicare and Medicaid Assessment; Dx; Dx ICD code; Identity or presence; International Classification of Diseases; Nominal; Point in time; Primary Dx ICD code; Random; Survey

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Frequently asked questions