LOINCActiveObservation

LOINC Code 40516-7: Histiocytes/Cells Manual cnt (Periton fld)

40516-7 is a LOINC code used to identify Histiocytes/Cells Manual cnt (Periton fld) 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 Histiocytes/Cells. It is commonly used with the system or sample type Periton fld.

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 Histiocytes/Cells. It is commonly used with the system or sample type Periton fld.

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
  • Method: Manual count

What it does not mean

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

Key facts

  • Histiocytes/cells in Peritoneal fluid by Manual count
  • Histiocytes/Cells
  • Ascites; Ascitic fluid; Ascitis; Cell; Cellularity; HEMATOLOGY/CELL COUNTS; Histiocyte; Histocytes; Manl; Number fraction; Percent; Peritoneal fluid; Point in time; Prt; QNT; Quan; Quant; Quantitative; Random

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

Histiocytes/Cells Manual cnt (Periton fld)Histiocytes/cells in Peritoneal fluid by Manual countHistiocytes NFr Prt ManualHistiocytes/CellsHEM/BCHistiocytes/cells, Peritoneal fluidNFr

Frequently asked questions

Code details

Code40516-7
SystemLOINC
Display nameHistiocytes/Cells Manual cnt (Periton fld)
DescriptionHistiocytes/Cells
Short nameHistiocytes NFr Prt Manual
ComponentHistiocytes/Cells
PropertyNFr
TimingPt
System (specimen)Periton fld
ScaleQn
MethodManual count
ClassHEM/BC
Example units%
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.15
Last changed2.79

Consumer names

Histiocytes/cells, Peritoneal fluid

Part names

Histiocytes/CellsNFrPtPeriton fldQnManual countNumber FractionPoint in time (spot)Peritoneal 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.

LOINC Code 40516-7 | HealthAssure