ICD-10-CM Alphabetic Index · FY 2026 70 Entries
Block in the ICD-10-CM Index ICD-10-CM
The main term Block, blocked carries 70 index entries pointing to 28 ICD-10-CM codes. Every indented line below refines the term by site, cause, or type. Verify any candidate code in the Tabular List before using it.
✓ Built from the official CMS FY 2026 index fileEffective Oct 1, 2025 – Sep 30, 2026
70
Index Entries
28
Codes Referenced
—
Default Code
B
Letter
70 of 70 shown
ICD-10-CM
Index Entries Under Block 70 entries · 28 codes
Block, blocked
alveolocapillary J84.10
arborization (heart) I45.5
arrhythmic I45.9
atrioventricular (incomplete) (partial) I44.30
with atrioventricular dissociation I44.2
complete I44.2
congenital Q24.6
congenital Q24.6
first degree I44.0
second degree (types I and II) I44.1
specified NEC I44.39
third degree I44.2
types I and II I44.1
auriculoventricular see Block, atrioventricular
bifascicular (cardiac) I45.2
bundle-branch (complete) (false) (incomplete) I45.4
bilateral I45.2
left I44.7
with right bundle branch block I45.2
hemiblock I44.60
anterior I44.4
posterior I44.5
incomplete I44.7
with right bundle branch block I45.2
right I45.10
with
left bundle branch block I45.2
left fascicular block I45.2
specified NEC I45.19
Wilson's type I45.19
cardiac I45.9
conduction I45.9
complete I44.2
fascicular (left) I44.60
anterior I44.4
posterior I44.5
right I45.0
specified NEC I44.69
foramen Magendie (acquired) G91.1
congenital Q03.1
with spina bifida see Spina bifida, by site, with hydrocephalus
heart I45.9
bundle branch I45.4
bilateral I45.2
complete (atrioventricular) I44.2
congenital Q24.6
first degree (atrioventricular) I44.0
second degree (atrioventricular) I44.1
specified type NEC I45.5
third degree (atrioventricular) I44.2
hepatic vein I82.0
intraventricular (nonspecific) I45.4
bundle branch
bilateral I45.2
kidney N28.9
postcystoscopic or postprocedural N99.0
Mobitz (types I and II) I44.1
myocardial see Block, heart
nodal I45.5
organ or site, congenital NEC see Atresia, by site
portal (vein) I81
second degree (types I and II) I44.1
sinoatrial I45.5
sinoauricular I45.5
third degree I44.2
trifascicular I45.3
tubal N97.1
vein NOS I82.90
Wenckebach (types I and II) I44.1
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Related Index Terms
Source: Centers for Medicare & Medicaid Services, FY 2026 ICD-10-CM Index to Diseases and Injuries release files, effective October 1, 2025 through September 30, 2026.
