What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINC

LOINC Code 18668-4: Deprecated Alcohol-substance abuse rehabilitation treatment plan, Frequency of assessments for follow up #

Name: LOINC Code 18668-4: Deprecated Alcohol-substance abuse rehabilitation treatment plan, Frequency of assessments for follow up #
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:27.591Z

18668-4 is a LOINC code used to identify Deprecated Alcohol-substance abuse rehabilitation treatment plan, Frequency of assessments for follow up # in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Frequency of assessments for follow up. It is commonly used with the system or sample type Alcohol-substance abuse rehabilitation treatment plan.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

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 Frequency of assessments for follow up. It is commonly used with the system or sample type Alcohol-substance abuse rehabilitation treatment plan.

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

What it does not mean

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

Key facts

Deprecated Alcohol-substance abuse rehabilitation treatment plan, Frequency of assessments for follow up #
Frequency of assessments for follow up
Alc; alcoholic; Alcohol-substance abuse rehabilitation Tx; Alcohol-substance abuse rehabilitation Tx plan; ATTACH; ATTACH.REHAB; ATTACH.REHAB.PSYCH; Cnt; Count; Follow-up; Mental health; MentalHealth; Number; Point in time; Psych; Psychiatry; QNT; Quan; Quant; Quantitative; Random; Rehabilitation Tx Plan; RehabTx; Subs; Tx; Tx Plan

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

Deprecated Alcohol-substance abuse rehabilitation treatment plan, Frequency of assessments for follow up #DeprecatedFrequency of assessments for follow upATTACH.REHAB.PSYCHNumPtAlcohol-substance abuse rehabilitation treatment plan

Frequently asked questions

Code details

Code18668-4

SystemLOINC

Display nameDeprecated Alcohol-substance abuse rehabilitation treatment plan, Frequency of assessments for follow up #

DescriptionFrequency of assessments for follow up

Short nameDeprecated

ComponentFrequency of assessments for follow up

PropertyNum

TimingPt

System (specimen)Alcohol-substance abuse rehabilitation treatment plan

ScaleQn

ClassATTACH.REHAB.PSYCH

StatusDEPRECATED

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0l

Last changed2.66

Part names

Frequency of assessments for follow upNumPtAlcohol-substance abuse rehabilitation treatment planQnNumber (count)Point in time (spot)

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.