LOINC

LOINC Code 18637-9: Deprecated Psychiatric rehabilitation treatment plan, Visit frequency TQ2

18637-9 is a LOINC code used to identify Deprecated Psychiatric rehabilitation treatment plan, Visit frequency TQ2 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 Visit frequency. It is commonly used with the system or sample type Psychiatric 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 Visit frequency. It is commonly used with the system or sample type Psychiatric 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 Psychiatric rehabilitation treatment plan, Visit frequency TQ2
  • Visit frequency
  • ATTACH; ATTACH.REHAB; ATTACH.REHAB.PSYCH; Mental health; MentalHealth; Ordinal; Point in time; Psych; Psychiatric rehabilitation Tx; Psychiatric rehabilitation Tx plan; Psychiatry; QL; Qual; Qualitative; Random; Rehabilitation Tx Plan; RehabTx; Screen; Timing - quantity; 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 Psychiatric rehabilitation treatment plan, Visit frequency TQ2DeprecatedVisit frequencyATTACH.REHAB.PSYCHTQ2PtPsychiatric rehabilitation treatment plan

Frequently asked questions

Code details

Code18637-9
SystemLOINC
Display nameDeprecated Psychiatric rehabilitation treatment plan, Visit frequency TQ2
DescriptionVisit frequency
Short nameDeprecated
ComponentVisit frequency
PropertyTQ2
TimingPt
System (specimen)Psychiatric rehabilitation treatment plan
ScaleOrd
ClassATTACH.REHAB.PSYCH
StatusDEPRECATED

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0l
Last changed2.66

Part names

Visit frequencyTQ2PtPsychiatric rehabilitation treatment planOrdTQ2 (HL7 datatype)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.