Skip to content
Dx

ICD-10-CM 2027

ICD-10 code for block

Choose a code from the options below based on the documentation.

From the official ICD-10-CM alphabetic index entry “Block, blocked”. Page updated September 29, 2026.

About coding block

The official ICD-10-CM index doesn't give a single default code for block; the code depends on the details below.

More specific block codes (official index)

  • alveolocapillary J84.10 — Pulmonary fibrosis, unspecified
  • arborization (heart) I45.5 — Other specified heart block
  • arrhythmic I45.9 — Conduction disorder, unspecified
  • atrioventricular (incomplete) (partial) I44.30 — Unspecified atrioventricular block
  • with atrioventricular dissociation I44.2 — Atrioventricular block, complete
  • complete I44.2 — Atrioventricular block, complete
  • congenital Q24.6 — Congenital heart block
  • congenital Q24.6 — Congenital heart block
  • first degree I44.0 — Atrioventricular block, first degree
  • second degree (types I and II) I44.1 — Atrioventricular block, second degree
  • specified NEC I44.39 — Other atrioventricular block
  • third degree I44.2 — Atrioventricular block, complete
  • types I and II I44.1 — Atrioventricular block, second degree
  • auriculoventricular
  • bifascicular (cardiac) I45.2 — Bifascicular block
  • bundle-branch (complete) (false) (incomplete) I45.4 — Nonspecific intraventricular block
  • bilateral I45.2 — Bifascicular block
  • left I44.7 — Left bundle-branch block, unspecified
  • with right bundle branch block I45.2 — Bifascicular block
  • hemiblock I44.60 — Unspecified fascicular block
  • anterior I44.4 — Left anterior fascicular block
  • posterior I44.5 — Left posterior fascicular block
  • incomplete I44.7 — Left bundle-branch block, unspecified
  • with right bundle branch block I45.2 — Bifascicular block
  • right I45.10 — Unspecified right bundle-branch block
  • with
  • left bundle branch block I45.2 — Bifascicular block
  • left fascicular block I45.2 — Bifascicular block
  • specified NEC I45.19 — Other right bundle-branch block
  • Wilson's type I45.19 — Other right bundle-branch block
  • cardiac I45.9 — Conduction disorder, unspecified
  • conduction I45.9 — Conduction disorder, unspecified
  • complete I44.2 — Atrioventricular block, complete
  • fascicular (left) I44.60 — Unspecified fascicular block
  • anterior I44.4 — Left anterior fascicular block
  • posterior I44.5 — Left posterior fascicular block
  • right I45.0 — Right fascicular block
  • specified NEC I44.69 — Other fascicular block
  • foramen Magendie (acquired) G91.1 — Obstructive hydrocephalus
  • congenital Q03.1 — Atresia of foramina of Magendie and Luschka
  • with spina bifida
  • heart I45.9 — Conduction disorder, unspecified
  • bundle branch I45.4 — Nonspecific intraventricular block
  • bilateral I45.2 — Bifascicular block
  • complete (atrioventricular) I44.2 — Atrioventricular block, complete
  • congenital Q24.6 — Congenital heart block
  • first degree (atrioventricular) I44.0 — Atrioventricular block, first degree
  • second degree (atrioventricular) I44.1 — Atrioventricular block, second degree
  • specified type NEC I45.5 — Other specified heart block
  • third degree (atrioventricular) I44.2 — Atrioventricular block, complete
  • hepatic vein I82.0 — Budd-Chiari syndrome
  • intraventricular (nonspecific) I45.4 — Nonspecific intraventricular block
  • bundle branch
  • bilateral I45.2 — Bifascicular block
  • kidney N28.9 — Disorder of kidney and ureter, unspecified
  • postcystoscopic or postprocedural N99.0 — Postprocedural (acute) (chronic) kidney failure
  • Mobitz (types I and II) I44.1 — Atrioventricular block, second degree
  • myocardial
  • nodal I45.5 — Other specified heart block
  • organ or site, congenital NEC
  • portal (vein) I81 — Portal vein thrombosis
  • second degree (types I and II) I44.1 — Atrioventricular block, second degree
  • sinoatrial I45.5 — Other specified heart block
  • sinoauricular I45.5 — Other specified heart block
  • third degree I44.2 — Atrioventricular block, complete
  • trifascicular I45.3 — Trifascicular block
  • tubal N97.1 — Female infertility of tubal origin
  • vein NOS I82.90 — Acute embolism and thrombosis of unspecified vein
  • Wenckebach (types I and II) I44.1 — Atrioventricular block, second degree

Common questions about block ICD-10 codes

What is the ICD-10 code for alveolocapillary block?

J84.10 — Pulmonary fibrosis, unspecified.

What is the ICD-10 code for arborization block?

I45.5 — Other specified heart block.

What is the ICD-10 code for arrhythmic block?

I45.9 — Conduction disorder, unspecified.

What is the ICD-10 code for atrioventricular block?

I44.30 — Unspecified atrioventricular block.

What is the ICD-10 code for bifascicular block?

I45.2 — Bifascicular block.

What is the ICD-10 code for bundle-branch block?

I45.4 — Nonspecific intraventricular block.

What is the ICD-10 code for cardiac block?

I45.9 — Conduction disorder, unspecified.