ICD-10-CM Alphabetic Index · FY 2026 Letter T
Index Terms Starting With T ICD-10-CM
Home › ICD-10-CM Codes List › Index to Diseases and Injuries › TThe letter T section of the FY 2026 Alphabetic Index carries 375 main terms , from Tabacism to Tyrosinuria. Terms with a direct code link straight to the code page, cross references point to the main term that holds the codes, and terms with a handful of sub-entries render in full right here. The largest terms open their own full index page.
✓ Built from the official CMS FY 2026 index file Effective Oct 1, 2025 – Sep 30, 2026
Tabacism, tabacosis, tabagism Sub-entries see also Poisoning, tobacco
meaning dependence (without remission) see Dependence, drug, nicotine
Tabardillo Sub-entries A75.9 with
central nervous system syphilis
A52.10 Taboparesis (remission) Sub-entries A52.17 TAC (trigeminal autonomic cephalgia) NEC Sub-entries G44.099 Tache noir Code S60.22 Non-billable Tachyalimentation Code K91.2 Tachyarrhythmia, tachyrhythmia Cross-ref See: Tachycardia AV nodal re-entry (re-entrant)
I47.19 junctional (paroxysmal)
I47.19 Tachypnea Sub-entries R06.82 newborn (idiopathic) (transitory)
P22.1 transitory, of newborn
P22.1 TACO (transfusion associated circulatory overload) Code E87.71 TAD (transfusion-associated dyspnea) Code J95.87 echinococcal infestation
B67.90 Taeniasis (intestine) Cross-ref See: Taenia
Takahara's disease Code E80.3 Takayasu's disease or syndrome Code M31.4 Talcosis (pulmonary) Code J62.0 acquired, planus see Deformity, limb, flat foot
calcaneovalgus
Q66.4 Non-billable calcaneovarus
Q66.1 Non-billable Tall stature, constitutional Code E34.4 Talma's disease Code M62.89 Talon noir Sub-entries S90.3 Non-billable Tamponade, heart Code I31.4 Tanapox (virus disease) Code B08.71 Tangier disease Code E78.6 Tantrum, child problem Code F91.8 Tapeworm (infection) (infestation) Cross-ref See: Infestation, tapeworm Tapia's syndrome Code G52.7 TAR (thrombocytopenia with absent radius) syndrome Code Q87.2 Tarral-Besnier disease Code L44.0 Tarsal tunnel syndrome Cross-ref See: Syndrome, tarsal tunnel Tarsalgia Cross-ref See: Pain, limb, lower
Tarsitis (eyelid) Sub-entries H01.8 Non-billable Tartar (teeth) (dental calculus) Code K03.6 Tauri's disease Code E74.09 Taussig-Bing syndrome Code Q20.1 Taybi's syndrome Code Q87.2 Tay-Sachs amaurotic familial idiocy or disease Code E75.02 TBI (traumatic brain injury) Code S06.9 Non-billable Teacher's node or nodule Code J38.2 Tear, torn (traumatic) Sub-entries see also Laceration with abortion see Abortion
anus, anal (sphincter)
S31.831 Non-billable complicating delivery
Tear-stone Cross-ref See: Dacryolith
Teeth Sub-entries see also condition
Teething (syndrome) Code K00.7 ataxic (cerebellar) (Louis-Bar)
G11.3 hemorrhagic, hereditary (congenital) (senile)
I78.0 hereditary, hemorrhagic (congenital) (senile)
I78.0 Telephone scatologia Code F65.89 Telescoped bowel or intestine Sub-entries K56.1 Temperature Sub-entries
body, high (of unknown origin)
R50.9 cold, trauma from
T69.9 Non-billable specified effect NEC
T69.8 Non-billable Temple Cross-ref See: condition Temporal Cross-ref See: condition Temporomandibular joint pain-dysfunction syndrome Code M26.62 Non-billable Temporosphenoidal Cross-ref See: condition bleeding see Defect, coagulation
suicide
meaning personal history of attempted suicide
Z91.51 meaning suicidal ideation see Ideation, suicidal
Tendinitis, tendonitis Sub-entries see also Enthesopathy Achilles
M76.6 Non-billable adhesive see Tenosynovitis, specified type NEC
shoulder see Capsulitis, adhesive
bicipital
M75.2 Non-billable Tendon Cross-ref See: condition Tendosynovitis Cross-ref See: Tenosynovitis Tenesmus (rectal) Sub-entries R19.8 Tennis elbow Cross-ref See: Epicondylitis, lateral
Tenonitis Sub-entries see also Tenosynovitis
eye (capsule)
H05.04 Non-billable Tenontosynovitis Cross-ref See: Tenosynovitis Tenontothecitis Cross-ref See: Tenosynovitis Tenophyte Cross-ref See: Disorder, synovium, specified type NEC
Tenosynovitis Sub-entries M65.90 see also Synovitis adhesive see Tenosynovitis, specified type NEC
shoulder see Capsulitis, adhesive
bicipital (calcifying) see Tendinitis, bicipital
Tenovaginitis Cross-ref See: Tenosynovitis arterial, high see also Hypertension
without diagnosis of hypertension
R03.0 Tentorium Cross-ref See: condition Teratencephalus Code Q89.89 Teratoblastoma (malignant) Cross-ref See: Neoplasm, malignant, by site
Teratocarcinoma Sub-entries see also Neoplasm, malignant, by site
Teratoma (solid) Sub-entries see also Neoplasm, uncertain behavior, by site with embryonal carcinoma, mixed see Neoplasm, malignant, by site
with malignant transformation see Neoplasm, malignant, by site
adult (cystic) see Neoplasm, benign, by site
benign see Neoplasm, benign, by site
Termination Sub-entries
anomalous see also Malposition, congenital
right pulmonary vein
Q26.3 pregnancy, elective
Z33.2 Ternidens diminutus infestation Code B81.8 Terror (s) night (child) Code F51.4 Terrorism, victim of Code Z65.4 Terry's syndrome Code H44.2 Non-billable See also: Myopia, degenerative Tertiary Cross-ref See: condition Testicle, testicular, testis Sub-entries see also condition
feminization syndrome
E34.51 see also Syndrome, androgen insensitivity with
ectopic or molar pregnancy
O08.0 following ectopic or molar pregnancy
O08.0 associated with rickets
E55.0 Tetralogy of Fallot Code Q21.3 Tetraplegia (chronic) Code G82.50 See also: Quadriplegia Thailand hemorrhagic fever Code A91 Thalassanemia Cross-ref See: Thalassemia
with other hemoglobinopathy
D56.8 alpha (major) (severe) (triple gene defect)
D56.0 Thanatophoric dwarfism or short stature Code Q77.1 Thaysen-Gee disease (nontropical sprue) Code K90.0 Thaysen's disease Code K90.0 Thecoma Sub-entries D27 Non-billable luteinized
D27 Non-billable malignant
C56 Non-billable Thelarche, premature Code E30.8 Thelitis Sub-entries N61.0 puerperal, postpartum or gestational see Infection, nipple
Therapeutic Cross-ref See: condition drug, long-term (current) (prophylactic)
agents affecting estrogen receptors and estrogen levels NEC
Z79.818 Thermic Cross-ref See: condition Thermography (abnormal) Sub-entries R93.89 see also Abnormal, diagnostic imaging Thermoplegia Code T67.01 Non-billable Thesaurismosis, glycogen Cross-ref See: Disease, glycogen storage
Thiamin deficiency Sub-entries E51.9 Thiaminic deficiency with beriberi Code E51.11 Thibierge-Weissenbach syndrome Cross-ref See: Sclerosis, systemic
bone see Hypertrophy, bone
Thigh Cross-ref See: condition Thinning vertebra Cross-ref See: Spondylopathy, specified NEC Thirst, excessive Sub-entries R63.1 due to deprivation of water
T73.1 Non-billable Thomsen disease Code G71.12 Thoracic Sub-entries see also condition
outlet syndrome
G54.0 see also Syndrome, thoracic outlet Thoracogastroschisis (congenital) Code Q79.8 Thorax Cross-ref See: condition Thorn's syndrome Code N28.89 Thorson-Björck syndrome Code E34.09 Threadworm (infection) (infestation) Code B80 with subsequent abortion
O03.9 abuse (harm)
adult see Maltreatment, adult, threatened abuse
Three-day fever Code A93.1 Threshers' lung Code J67.0 Thrix annulata (congenital) Code Q84.1 Throat Cross-ref See: condition Thrombasthenia (Glanzmann) (hemorrhagic) (hereditary) Code D69.1 obliterans (general)
I73.1 vessels
Thromboarteritis Cross-ref See: Arteritis Thromboasthenia (Glanzmann) (hemorrhagic) (hereditary) Code D69.1 Thrombocytasthenia (Glanzmann) Code D69.1 Thrombocythemia (hemorrhagic) Sub-entries D75.839 see also Thrombocytosis Thrombocytopathy (dystrophic) (granulopenic) Code D69.1 with absent radius (TAR)
Q87.2 due to
Thromboembolism Cross-ref See: Embolism
Thrombopathy (Bernard-Soulier) Sub-entries D69.1 constitutional see Disease, von Willebrand
Willebrand-Jurgens see Disease, von Willebrand
Thrombopenia Cross-ref See: Thrombocytopenia
Thrombophilia Sub-entries D68.59 antepartum
O22.2 Non-billable superficial
O22.2 Non-billable calf muscular vein (NOS)
I80.25 Non-billable antepartum see Thrombophlebitis, antepartum
Thrombus Cross-ref See: Thrombosis
Thrush Sub-entries see also Candidiasis
Thumb Sub-entries see also condition
sucking (child problem)
F98.8 Thymoma Sub-entries see also Neoplasm, thymus, by type Thymus, thymic (gland) Cross-ref See: condition Thyrocele Cross-ref See: Goiter
Thyroglossal Sub-entries see also condition
Thyroid (gland) (body) Sub-entries see also condition
nodule (cystic) (nontoxic) (single)
E04.1 acute (nonsuppurative) (pyogenic) (suppurative)
E06.0 chronic (nonspecific) (sclerosing)
E06.5 with thyrotoxicosis, transient
E06.2 Thyrolingual duct, persistent Code Q89.2 Thyrotoxic Sub-entries
crisis see Thyrotoxicosis
heart disease or failure
E05.90 see also Thyrotoxicosis storm see Thyrotoxicosis
Tibia vara Code M92.51 Non-billable Tick-borne Cross-ref See: condition Tietze's disease or syndrome Code M94.0 foreskin (congenital)
N47.1 Timidity, child Code F93.8 Tingling sensation (skin) Code R20.2 Tin-miner's lung Code J63.5 Tinnitus NOS Sub-entries H93.1 Non-billable audible
H93.1 Non-billable aurium
H93.1 Non-billable pulsatile
H93.A Non-billable subjective
H93.1 Non-billable Tipped tooth (teeth) Code M26.33 Tipping Sub-entries
with disproportion (fetopelvic)
O33.0 causing obstructed labor
O65.0 tooth (teeth), fully erupted
M26.33 Tissue Cross-ref See: condition abuse see Tobacco, use
dependence see Dependence, drug, nicotine
heart see Tobacco, toxic effect
Tocopherol deficiency Code E56.0 Todd's Sub-entries
paralysis (postepileptic) (transitory)
G83.84 Toe Cross-ref See: condition Toilet, artificial opening Cross-ref See: Attention to, artificial, opening Tokelau (ringworm) Code B35.5 Tollwut Cross-ref See: Rabies Tommaselli's disease Sub-entries R31.9 correct substance properly administered see Table of Drugs and Chemicals, by drug, adverse effect
overdose or wrong substance given or taken see Table of Drugs and Chemicals, by drug, poisoning
Tongue Sub-entries see also condition
Tonic pupil Cross-ref See: Anomaly, pupil, function, tonic pupil
Toni-Fanconi syndrome (cystinosis) Sub-entries E72.09 Tonsil Cross-ref See: condition Tooth, teeth Cross-ref See: condition Tophi Cross-ref See: Gout, chronic TORCH infection Sub-entries see Infection, congenital
without active infection
P00.2 Torn Cross-ref See: Tear
Tornwaldt's cyst or disease Code J39.2 Torsades de pointes Code I47.21 accessory tube see Torsion, fallopian tube
adnexa (female) see Torsion, fallopian tube
congenital (sternomastoid)
Q68.0 due to birth injury
P15.8 organ or site, congenital NEC see Distortion
retinal vessel, congenital
Q14.1 Torture, victim of Code Z65.4 Torula, torular (histolytica) (infection) Cross-ref See: Cryptococcosis
Torulosis Cross-ref See: Cryptococcosis
Torus (mandibularis) (palatinus) Sub-entries M27.0 fracture see Fracture, by site, torus
Touraine's syndrome Code Q79.8 Tourette's syndrome Code F95.2 Tourniquet syndrome Cross-ref See: Constriction, external, by site Tower skull Sub-entries Q75.058 bacterial see Sepsis
burn see Burn
eclamptic (with pre-existing hypertension) see Eclampsia
erysipelatous see Erysipelas
Toxemica cerebropathia psychica (nonalcoholic) Sub-entries F04 alcoholic see Alcohol, amnestic disorder
Toxic (poisoning) Sub-entries T65.91 Non-billable see also condition effect see Table of Drugs and Chemicals, by substance, poisoning
thyroid (gland) see Thyrotoxicosis
Toxicemia Cross-ref See: Toxemia Toxicity Sub-entries see Table of Drugs and Chemicals, by substance, poisoning
food, noxious see Poisoning, food
from drug or nonmedicinal substance see Table of Drugs and Chemicals, by drug
Toxicosis Sub-entries see also Toxemia
capillary, hemorrhagic
D69.0 Toxinfection, gastrointestinal Code K52.1 with
meningoencephalitis
B58.2 tPA (rtPA) administration in a different facility within the last 24 hours prior to admission to current facility Code Z92.82 Trabeculation, bladder Code N32.89 Trachea Cross-ref See: condition with
bronchitis (15 years of age and above)
J40 acute or subacute see Bronchitis, acute
Trachelitis (nonvenereal) Cross-ref See: Cervicitis
Tracheobronchial Cross-ref See: condition Tracheobronchitis (15 years of age and above) Sub-entries see also Bronchitis
due to
Bordetella bronchiseptica
A37.80 Francisella tularensis
A21.8 with bronchiectasis
J47.9 with
exacerbation (acute)
J47.1 lower respiratory infection
J47.0 Tracheobronchopneumonitis Cross-ref See: Pneumonia, broncho-
Tracheocele (external) (internal) Sub-entries J39.8 Tracheomalacia Sub-entries J39.8 Tracheopharyngitis (acute) Sub-entries J06.9 due to external agent see Inflammation, respiratory, upper, due to
Tracheostenosis Code J39.8 Tracheostomy Sub-entries
complication see Complication, tracheostomy
contraction of conjunctiva
A71.1 Traction, vitreomacular Code H43.82 Non-billable Train sickness Code T75.3 Non-billable Transaminasemia Code R74.01 abdomen (partial)
S38.3 Non-billable aorta (incomplete) see also Injury, aorta
complete see Injury, aorta, laceration, major
carotid artery (incomplete) see also Injury, blood vessel, carotid, laceration
associated (red blood cell) hemochromatosis
E83.111 blood
ABO incompatible see Complication(s), transfusion, incompatibility reaction, ABO
minor blood group (Duffy) (E) (K) (Kell) (Kidd) (Lewis) (M) (N) (P) (S)
T80.89 Non-billable Transient (meaning homeless) Code Z59.00 See also: condition in normal individual
Q95.0 chromosomes NEC
Q99.8 Non-billable balanced and insertion in normal individual
Q95.0 Translucency, iris Cross-ref See: Degeneration, iris
Transmission of chemical substances through the placenta Cross-ref See: Absorption, chemical, through placenta Transparency, lung, unilateral Code J43.0 Transplants, ovarian, endometrial Code N80.10 Non-billable Transposed Cross-ref See: Transposition
Transposition (congenital) Sub-entries see also Malposition, congenital Transverse Sub-entries see also condition
arrest (deep), in labor
O64.0 Non-billable lie (mother)
O32.2 Non-billable causing obstructed labor
O64.8 Non-billable Transvestism, transvestitism (dual-role) Sub-entries F64.1 Trapped placenta (with hemorrhage) Sub-entries O72.0 TRAPS (tumor necrosis factor receptor associated periodic syndrome) Code M04.1 Trauma, traumatism Sub-entries see also Injury acoustic
birth see Birth, injury
complicating ectopic or molar pregnancy
O08.6 Traumatic Sub-entries see also condition
brain injury
S06.9 Non-billable Treacher Collins syndrome Code Q75.4 Treitz's hernia Cross-ref See: Hernia, abdomen, specified site NEC
Trematode infestation Cross-ref See: Infestation, fluke Trematodiasis Cross-ref See: Infestation, fluke Trembling paralysis Cross-ref See: Parkinsonism
Trench Sub-entries
Treponema pallidum infection Cross-ref See: Syphilis
Treponematosis Sub-entries
due to
T. pallidum see Syphilis
T. pertenue see Yaws
Triad Sub-entries
Hutchinson's (congenital syphilis)
A50.53 Saint's see Hernia, diaphragm
with entropion see Entropion
Trichinella spiralis (infection) (infestation) Code B75 Trichobezoar Sub-entries T18.9 Non-billable intestine
T18.3 Non-billable stomach
T18.2 Non-billable Trichocephaliasis, trichocephalosis Code B79 Trichocephalus infestation Code B79 Trichoepithelioma Sub-entries see also Neoplasm, skin, benign
malignant see Neoplasm, skin, malignant
Trichofolliculoma Cross-ref See: Neoplasm, skin, benign
Tricholemmoma Cross-ref See: Neoplasm, skin, benign
Trichomycosis Sub-entries
Trichophytid, trichophyton infection Cross-ref See: Dermatophytosis
Trichophytobezoar Sub-entries T18.9 Non-billable intestine
T18.3 Non-billable stomach
T18.2 Non-billable Trichophytosis Cross-ref See: Dermatophytosis
Trichorrhexis (nodosa) (invaginata) Code L67.0 Trichosis axillaris Code A48.8 Trichosporosis nodosa Code B36.2 Trichostasis spinulosa (congenital) Code Q84.1 Trichostrongyliasis, trichostrongylosis (small intestine) Code B81.2 Trichostrongylus infection Code B81.2 Trichotillomania Code F63.3 Trichromat, trichromatopsia, anomalous (congenital) Code H53.55 Trichuris trichiura (infection) (infestation) (any site) Code B79 Tricuspid (valve) Cross-ref See: condition Trifid Sub-entries see also Accessory
Trigeminal neuralgia Cross-ref See: Neuralgia, trigeminal
index finger
M65.32 Non-billable little finger
M65.35 Non-billable middle finger
M65.33 Non-billable Trigonitis (bladder) (chronic) (pseudomembranous) Sub-entries N30.30 Trigonocephaly Code Q75.03 Trilocular heart Cross-ref See: Cor triloculare
Trimethylaminuria Code E72.52 Tripartite placenta Code O43.19 Non-billable Triphalangeal thumb Code Q74.0 Triple Sub-entries see also Accessory
negative breast cancer (TNBC)
Z17.421 Triple I Code O41.12 Non-billable Triplegia Sub-entries G83.89 Triplet (newborn) Sub-entries see also Newborn, triplet
complicating pregnancy see Pregnancy, triplet
Triplication Cross-ref See: Accessory
chromosome specified NEC
Q92.8 due to unbalanced translocation
Q92.5 Tritanomaly, tritanopia Code H53.55 Trombiculosis, trombiculiasis, trombidiosis Code B88.09 Trophedema (congenital) (hereditary) Code Q82.0 Trophoblastic disease Code O01.9 See also: Mole, hydatidiform Tropholymphedema Code Q82.0 Trophoneurosis NEC Sub-entries G96.89 Tropical Cross-ref See: condition Trouble Sub-entries see also Disease
heart see Disease, heart
kidney see Disease, renal
sinus see Sinusitis
Trousseau's syndrome (thrombophlebitis migrans) Code I82.1 Truancy, childhood Sub-entries
Truncus Sub-entries
arteriosus (persistent)
Q20.0 Trunk Cross-ref See: condition Tryptasemia, hereditary alpha Code D89.44 T-shaped incisors Code K00.2 Tsutsugamushi (disease) (fever) Code A75.3 Tube, tubal, tubular Cross-ref See: condition Tubercle Sub-entries see also Tuberculosis
Ghon, primary infection
A15.7 Tuberculid, tuberculide (indurating, subcutaneous) (lichenoid) (miliary) (papulonecrotic) (primary) (skin) Code A18.4 Tuberculoma Sub-entries see also Tuberculosis
meninges (cerebral) (spinal)
A17.1 with pneumoconiosis (any condition in J60-J64)
J65 abscess (respiratory)
A15.9 Tuberculum Sub-entries
Carabelli
K00.2 see Note at occlusal
K00.2 see Note at Tuberosity, entire maxillary Code M26.07 Tuberous sclerosis (brain) Code Q85.1 Tubo-ovarian Cross-ref See: condition Tuboplasty, after previous sterilization Sub-entries Z31.0 Tubotympanitis, catarrhal (chronic) Cross-ref See: Otitis, media, nonsuppurative, chronic, serous
Tularensis conjunctivitis Code A21.1 Tumefaction Sub-entries see also Swelling
liver see Hypertrophy, liver
Tumor Sub-entries see also Neoplasm, unspecified behavior, by site acinar cell see Neoplasm, uncertain behavior, by site
acinic cell see Neoplasm, uncertain behavior, by site
adenocarcinoid see Neoplasm, malignant, by site
adenomatoid see also Neoplasm, benign, by site
Tumor lysis syndrome (following antineoplastic chemotherapy) (spontaneous) NEC Code E88.3 Tumorlet Cross-ref See: Neoplasm, uncertain behavior, by site
Tunica vasculosa lentis Code Q12.2 Türck's trachoma Code J37.0 Turner-Kieser syndrome Code Q87.2 Turner-like syndrome Code Q87.19 Turner's Sub-entries
Turner-Ullrich syndrome Code Q96.9 Tussis convulsiva Cross-ref See: Whooping cough Twiddler's syndrome (due to) Sub-entries
automatic implantable defibrillator
T82.198 Non-billable cardiac pacemaker
T82.198 Non-billable Twilight state Sub-entries
Twin (newborn) Sub-entries see also Newborn, twin
pregnancy see Pregnancy, twin
Twinning, teeth Code K00.2 bowel, colon or intestine
K56.2 Tylosis (acquired) Sub-entries L84 palmaris et plantaris (congenital) (inherited)
Q82.8 Tympanites (abdominal) (intestinal) Code R14.0 Tympanitis Cross-ref See: Myringitis Tympanosclerosis Term
Tympanum Cross-ref See: condition Tympany Sub-entries
Type A behavior pattern Code Z73.1 Typhlitis Cross-ref See: Cecitis Typhoenteritis Cross-ref See: Typhoid
carrier (suspected) of
Z22.0 Typhomalaria (fever) Cross-ref See: Malaria
Typhoperitonitis Code A01.09 abdominal, abdominalis see Typhoid
Tyrosinemia Sub-entries E70.21 newborn, transitory
P74.5 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.
