LOINCActiveBoth

LOINC Code 2631-0: Methylmalonyl CoA mutase (S) [Catalytic activity/Vol]

2631-0 is a LOINC code used to identify Methylmalonyl CoA mutase (S) [Catalytic activity/Vol] 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 Methylmalonyl CoA mutase. It is commonly used with the system or sample type Ser.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Methylmalonyl CoA mutase. It is commonly used with the system or sample type Ser.

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: Both

What it does not mean

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

Key facts

  • Methylmalonyl CoA mutase [Enzymatic activity/volume] in Serum
  • Methylmalonyl CoA mutase
  • Catalytic Concentration; Chemistry; MCM; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; SR

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

Methylmalonyl CoA mutase (S) [Catalytic activity/Vol]Methylmalonyl CoA mutase [Enzymatic activity/volume] in SerumMCM Ser-cCncMethylmalonyl CoA mutaseCHEMMethylmalonyl coA mutase, BloodCCnc

Frequently asked questions

Code details

Code2631-0
SystemLOINC
Display nameMethylmalonyl CoA mutase (S) [Catalytic activity/Vol]
DescriptionMethylmalonyl CoA mutase
Short nameMCM Ser-cCnc
ComponentMethylmalonyl CoA mutase
PropertyCCnc
TimingPt
System (specimen)Ser
ScaleQn
ClassCHEM
Example unitsarb U/L
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0
Last changed2.68

Consumer names

Methylmalonyl coA mutase, Blood

Part names

Methylmalonyl CoA mutaseCCncPtSerQnCatalytic ConcentrationPoint in time (spot)Serum

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.