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.

LOINCActiveObservation

LOINC Code 75654-4: Manual differential comment Nar (CSF) [Interp]

Name: LOINC Code 75654-4: Manual differential comment Nar (CSF) [Interp]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:56.381Z

75654-4 is a LOINC code used to identify Manual differential comment Nar (CSF) [Interp] 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 Manual differential comment. It is commonly used with the system or sample type CSF.

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 Manual differential comment. It is commonly used with the system or sample type CSF.

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: ACTIVE
Order vs observation: Observation

What it does not mean

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

Key facts

Manual differential comment [Interpretation] in Cerebral spinal fluid Narrative
Manual differential comment
Cerebral spinal fluid; Cerebrospinal Fl; cmmt; cmnt; Com; Comm; Comments; Commt; Diff; Differl; Differn; HEMATOLOGY/CELL COUNTS; Impression; Impression/interpretation of study; Impressions; Interp; Interpretation; Manual dif comment; Narrative; Point in time; Random; Remarks; Report; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid

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

Manual differential comment Nar (CSF) [Interp]Manual differential comment [Interpretation] in Cerebral spinal fluid NarrativeManual dif comment CSF-ImpManual differential commentHEM/BCInterpretation of Manual differential comment test result, Spinal fluidImp

Frequently asked questions

Code details

Code75654-4

SystemLOINC

Display nameManual differential comment Nar (CSF) [Interp]

DescriptionManual differential comment

Short nameManual dif comment CSF-Imp

ComponentManual differential comment

PropertyImp

TimingPt

System (specimen)CSF

ScaleNar

ClassHEM/BC

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.50

Last changed2.50

Consumer names

Interpretation of Manual differential comment test result, Spinal fluid

Part names

Manual differential commentImpPtCSFNarImpression/interpretation of studyPoint in time (spot)Cerebral spinal fluid

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.