Condition

LBBB medical abbreviation

LBBB means "left bundle branch block".

Each meaning matched at least two public references (3 in all for LBBB), checked October 23, 2026. The table lists them.

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What LBBB means

Example

Sample ECG note: "LBBB."

A made-up line that shows the abbreviation in place. It is not about any patient and is not an instruction.

Related abbreviations

  • RBBBright bundle branch block
  • BBBbundle branch block
  • ECGelectrocardiogram
  • MImyocardial infarction
  • CHFcongestive heart failure
  • ADHDattention deficit hyperactivity disorder

Elsewhere on Rivvi

Questions

What does LBBB mean in medical terms?

LBBB means "left bundle branch block".

Where is LBBB used?

LBBB shows up in charting and problem lists. Its category here is condition.

Is LBBB on the Joint Commission Do Not Use list?

No. LBBB is not on the Joint Commission Do Not Use list or the ISMP error-prone list as checked on October 23, 2026.

Source: NCI Thesaurus, including CDISC SDTM terminology (NCI EVS); NLM SPECIALIST Lexicon abbreviations file (LRABR); Army Regulation 40-66, Appendix B: Authorized Medical Records Abbreviations. Data as of October 23, 2026. Last updated October 23, 2026. How we source data. Spotted an error? Send a correction.

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