ICD-10-CM Alphabetic Index · FY 2026 260 Entries
Defect in the ICD-10-CM Index ICD-10-CM
The main term Defect, defective carries 260 index entries pointing to 121 ICD-10-CM codes. The default entry is Q89.9, the code the bare main term maps to; 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
260
Index Entries
121
Codes Referenced
Q89.9
Default Code
D
Letter
260 of 260 shown
ICD-10-CM
Index Entries Under Defect 260 entries · 121 codes
Defect, defective Q89.9
3-beta-hydroxysteroid dehydrogenase E25.0
11-hydroxylase E25.0
21-hydroxylase E25.0
abdominal wall, congenital Q79.59
antibody immunodeficiency D80.9
aorticopulmonary septum Q21.4
atrial septal Q21.10
coronary sinus Q21.13
following acute myocardial infarction (current complication) I23.1
ostium primum type (type I) Q21.20
with
common atrioventricular valves and moderate or larger inlet VSD Q21.23
separate atrioventricular valves Q21.21
and small or restrictive inlet VSD Q21.22
ostium secundum type (patent persistent) (type II) Q21.11
sinus venosus Q21.16
inferior Q21.15
superior Q21.14
specified NEC Q21.19
vena cava type
inferior Q21.15
superior Q21.14
atrioventricular
canal Q21.20
septal
common Q21.23
complete Q21.23
incomplete Q21.21
intermediate Q21.22
partial Q21.21
transitional Q21.22
unspecified as to partial or complete Q21.20
septum Q21.20
auricular septal Q21.10
bilirubin excretion NEC E80.6
biosynthesis, androgen (testicular) E29.1
bulbar septum Q21.0
catalase E80.3
cell membrane receptor complex (CR3) D71.8
circulation I99.9
congenital Q28.9
newborn Q28.9
coagulation (factor) D68.9 see also Deficiency, factor
with
COVID-19 associated coagulopathy D68.8
ectopic pregnancy O08.1
molar pregnancy O08.1
acquired D68.4
antepartum with hemorrhage see Hemorrhage, antepartum, with coagulation defect
due to
liver disease D68.4
vitamin K deficiency D68.4
hereditary NEC D68.2
intrapartum O67.0
newborn, transient P61.6
postpartum O99.13
with hemorrhage O72.3
specified type NEC D68.8
complement system D84.1
conduction (heart) I45.9
bone see Deafness, conductive
congenital, organ or site not listed see Anomaly, by site
coronary sinus Q21.13
cushion, endocardial Q21.20
common Q21.23
incomplete Q21.21
intermediate Q21.22
transitional Q21.22
degradation, glycoprotein E77.1
dental bridge, crown, fillings see Defect, dental restoration
dental restoration K08.50
specified NEC K08.59
dentin (hereditary) K00.5
Descemet's membrane, congenital Q13.89
developmental see also Anomaly
cauda equina Q06.3
diaphragm
with elevation, eventration or hernia see Hernia, diaphragm
congenital Q79.1
with hernia Q79.0
gross (with hernia) Q79.0
ectodermal, congenital Q82.9
Eisenmenger's Q21.8
enzyme
catalase E80.3
peroxidase E80.3
esophagus, congenital Q39.9
extensor retinaculum M62.89
fibrin polymerization D68.2
filling
bladder R93.41
kidney R93.42 Non-billable
renal pelvis R93.41
stomach R93.3
ureter R93.41
urinary organs, specified NEC R93.49
GABA (gamma aminobutyric acid) metabolic E72.81
Gerbode Q21.0
glucose transport, blood-brain barrier E74.810
glycoprotein degradation E77.1
Hageman (factor) D68.2
hearing see Deafness
high grade F70
home, technical, preventing adequate care Z59.19
interatrial septal Q21.19
interauricular septal Q21.19
interventricular septal Q21.0
with dextroposition of aorta, pulmonary stenosis and hypertrophy of right ventricle Q21.3
in tetralogy of Fallot Q21.3
intervertebral annular fibrosis M51.9 see also Disease, intervertebral disc, by site
lumbar M51.A0
large M51.A2
small M51.A1
lumbosacral M51.A3
large M51.A5
small M51.A4
learning (specific) see Disorder, learning
lymphocyte function antigen-1 (LFA-1) D84.0
lysosomal enzyme, post-translational modification E77.0
major osseous M89.70
ankle M89.77 Non-billable
carpus M89.74 Non-billable
clavicle M89.71 Non-billable
femur M89.75 Non-billable
fibula M89.76 Non-billable
fingers M89.74 Non-billable
foot M89.77 Non-billable
forearm M89.73 Non-billable
hand M89.74 Non-billable
humerus M89.72 Non-billable
lower leg M89.76 Non-billable
metacarpus M89.74 Non-billable
metatarsus M89.77 Non-billable
multiple sites M89.79
pelvic region M89.75 Non-billable
pelvis M89.75 Non-billable
radius M89.73 Non-billable
scapula M89.71 Non-billable
shoulder region M89.71 Non-billable
specified NEC M89.78
tarsus M89.77 Non-billable
thigh M89.75 Non-billable
tibia M89.76 Non-billable
toes M89.77 Non-billable
ulna M89.73 Non-billable
mental see Disability, intellectual
modification, lysosomal enzymes, post-translational E77.0
obstructive, congenital
renal pelvis Q62.39
ureter Q62.39
atresia see Atresia, ureter
cecoureterocele Q62.32
megaureter Q62.2
orthotopic ureterocele Q62.31
osseous, major M89.70
ankle M89.77 Non-billable
carpus M89.74 Non-billable
clavicle M89.71 Non-billable
femur M89.75 Non-billable
fibula M89.76 Non-billable
fingers M89.74 Non-billable
foot M89.77 Non-billable
forearm M89.73 Non-billable
hand M89.74 Non-billable
humerus M89.72 Non-billable
lower leg M89.76 Non-billable
metacarpus M89.74 Non-billable
metatarsus M89.77 Non-billable
multiple sites M89.9
pelvic region M89.75 Non-billable
pelvis M89.75 Non-billable
radius M89.73 Non-billable
scapula M89.71 Non-billable
shoulder region M89.71 Non-billable
specified NEC M89.78
tarsus M89.77 Non-billable
thigh M89.75 Non-billable
tibia M89.76 Non-billable
toes M89.77 Non-billable
ulna M89.73 Non-billable
osteochondral NEC M95.8 see also Deformity
ostium
primum Q21.20
secundum Q21.11
peroxidase E80.3
placental blood supply see Insufficiency, placental
platelets, qualitative D69.1
constitutional see Disease, von Willebrand
postural NEC, spine see Dorsopathy, deforming
qualitative, of von Willebrand factor
with
decreased platelet adhesion and selective deficiency of high-molecular-weight multimers D68.020 see also Disease, von Willebrand
defective platelet adhesion with a normal size distribution of von Willebrand factor multimers D68.022 see also Disease, von Willebrand
defective von Willebrand factor to factor VIII binding D68.023 see also Disease, von Willebrand
high-molecular-weight von Willebrand factor loss D68.021 see also Disease, von Willebrand
hyper-adhesive forms D68.021 see also Disease, von Willebrand
increased affinity for platelet glycoprotein lb D68.021 see also Disease, von Willebrand
markedly decreased affinity for factor VIII D68.023 see also Disease, von Willebrand
in von Willebrand factor function, with no further subtyping D68.029 see also Disease, von Willebrand
reduction
limb Q73.8
lower Q72.9 Non-billable
absence see Agenesis, leg
foot see Agenesis, foot
longitudinal
femur Q72.4 Non-billable
fibula Q72.6 Non-billable
tibia Q72.5 Non-billable
specified type NEC Q72.89 Non-billable
split foot Q72.7 Non-billable
specified type NEC Q73.8
upper Q71.9 Non-billable
absence see Agenesis, arm
forearm see Agenesis, forearm
hand see Agenesis, hand
lobster-claw hand Q71.6 Non-billable
longitudinal
radius Q71.4 Non-billable
ulna Q71.5 Non-billable
specified type NEC Q71.89 Non-billable
renal pelvis Q63.8
obstructive Q62.39
respiratory system, congenital Q34.9
restoration, dental K08.50
specified NEC K08.59
retinal nerve bundle fibers H35.89
septal (heart) NOS Q21.9
acquired (atrial) (auricular) (ventricular) (old) I51.0
atrial Q21.10 see also Defect, atrial septal
concurrent with acute myocardial infarction see Infarct, myocardium
following acute myocardial infarction (current complication) I23.1
ventricular Q21.0 see also Defect, ventricular septal
sinus venosus Q21.16 see also Defect, atrial septal, sinus venosus
speech see Disorder, speech
developmental F80.9
specified NEC R47.89
Taussig-Bing (aortic transposition and overriding pulmonary artery) Q20.1
teeth, wedge K03.1
vascular (local) I99.9
congenital Q27.9
ventricular septal Q21.0
concurrent with acute myocardial infarction see Infarct, myocardium
following acute myocardial infarction (current complication) I23.2
in tetralogy of Fallot Q21.3
vision NEC H54.7
visual field H53.40
bilateral
heteronymous H53.47
homonymous H53.46 Non-billable
generalized contraction H53.48 Non-billable
localized
arcuate H53.43 Non-billable
scotoma (central area) H53.41 Non-billable
blind spot area H53.42 Non-billable
sector H53.43 Non-billable
specified type NEC H53.45 Non-billable
voice R49.9
specified NEC R49.8
wedge, tooth, teeth (abrasion) K03.1
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Related Index Terms
AgenesisDeformityDorsopathyAll index terms starting with DIndex to Diseases and InjuriesICD-10-CM Code Lookup
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.
