LOINCActiveObservation

LOINC Code 73701-5: Multiple carboxylase deficiency (MCD) (DBS) [Interp]

73701-5 is a LOINC code used to identify Multiple carboxylase deficiency (MCD) (DBS) [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 Multiple carboxylase deficiency. It is commonly used with the system or sample type Bld.dot.

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 Multiple carboxylase deficiency. It is commonly used with the system or sample type Bld.dot.

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

  • Multiple carboxylase deficiency (MCD) newborn screen interpretation
  • Multiple carboxylase deficiency
  • Multiple carboxylase deficiency (MCD), also known as holocarboxylase synthetase deficiency, is an inherited disorder in which the body is unable to use the vitamin biotin effectively. It is caused by mutations in the HLCS gene and has an autosomal recessive pattern of inheritance. This observation indicates whether the newborn screen was in-range or out-of-range for the analytes related to multiple carboxylase deficiency.
  • Blood; Chemistry; DBS; Dried blood spot; Filter paper; FP; Impression; Impression/interpretation of study; Impressions; Interp; Interpretation; MCD; Mult; Multi; Nominal; Point in time; Random; WB; Whole blood

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

Multiple carboxylase deficiency (MCD) (DBS) [Interp]Multiple carboxylase deficiency (MCD) newborn screen interpretationMCD DBS-ImpMultiple carboxylase deficiencyCHEMMultiple Carboxylase Deficiency (MCD), Dried blood spotImp

Frequently asked questions

Code details

Code73701-5
SystemLOINC
Display nameMultiple carboxylase deficiency (MCD) (DBS) [Interp]
DescriptionMultiple carboxylase deficiency
Short nameMCD DBS-Imp
ComponentMultiple carboxylase deficiency
PropertyImp
TimingPt
System (specimen)Bld.dot
ScaleNom
ClassCHEM
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.44
Last changed2.56

Consumer names

Multiple Carboxylase Deficiency (MCD), Dried blood spot

Part names

Multiple carboxylase deficiencyImpPtBld.dotNomMultiple carboxylase deficiency (MCD)Impression/interpretation of studyPoint in time (spot)DBS

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 73701-5 | HealthAssure