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 66496-1: Spermatozoa Abnormal head size/Spermatozoa (Sem)

Name: LOINC Code 66496-1: Spermatozoa Abnormal head size/Spermatozoa (Sem)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:46.209Z

66496-1 is a LOINC code used to identify Spermatozoa Abnormal head size/Spermatozoa (Sem) 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 Spermatozoa.abnormal head size/Spermatozoa. It is commonly used with the system or sample type Semen.

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 Spermatozoa.abnormal head size/Spermatozoa. It is commonly used with the system or sample type Semen.

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

Spermatozoa Abnormal head size/Spermatozoa in Semen
Spermatozoa.abnormal head size/Spermatozoa
abn; abnorm; Ejaculate; FERTILITY TESTING; Genitourinary; GU; Number Fraction; Percent; Point in time; QNT; Quan; Quant; Quantitative; Random; Sem; Seminal fluid; Smn; SMPLS; Sperm; Sperm Abnorm; Sperm Abnorm Head; Sperm abnorm head size; URO; Urology

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

Spermatozoa Abnormal head size/Spermatozoa (Sem)Spermatozoa Abnormal head size/Spermatozoa in SemenSperm abnorm head size NFr SmnSpermatozoa.abnormal head size/SpermatozoaFERTSpermatozoa Abnormal head size/Spermatozoa, SemenNFr

Frequently asked questions

Code details

Code66496-1

SystemLOINC

Display nameSpermatozoa Abnormal head size/Spermatozoa (Sem)

DescriptionSpermatozoa.abnormal head size/Spermatozoa

Short nameSperm abnorm head size NFr Smn

ComponentSpermatozoa.abnormal head size/Spermatozoa

PropertyNFr

TimingPt

System (specimen)Semen

ScaleQn

ClassFERT

Example units%

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.38

Last changed2.79

Consumer names

Spermatozoa Abnormal head size/Spermatozoa, Semen

Part names

Spermatozoa.abnormal head size/SpermatozoaNFrPtSemenQnNumber FractionPoint 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.