ICD-10-CM Alphabetic Index · FY 2026 Letter G
Index Terms Starting With G ICD-10-CM
Home › ICD-10-CM Codes List › Index to Diseases and Injuries › GThe letter G section of the FY 2026 Alphabetic Index carries 269 main terms , from Gain in weight to Gyrate scalp. 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
Gain in weight (abnormal) (excessive) Cross-ref See also: Weight, gain Gaisböck's disease (polycythemia hypertonica) Code D75.1 hysterical (ataxic) (staggering)
F44.4 Galactocele (breast) Sub-entries N64.89 Galactokinase deficiency Code E74.29 Galactophoritis Sub-entries N61.0 gestational, puerperal, postpartum
O91.2 Non-billable Galactorrhea Sub-entries O92.6 not associated with childbirth
N64.3 Galactosemia (classic) (congenital) Code E74.21 Galacturia Sub-entries R82.0 schistosomiasis (bilharziasis)
B65.0 GALD (gestational alloimmune liver disease) Code P78.84 Galeazzi's fracture Code S52.37 Non-billable Galen's vein Cross-ref See: condition Gall duct Cross-ref See: condition Gallbladder Sub-entries see also condition
with
cholecystitis see Calculus, gallbladder, with cholecystitis
bile duct (common) (hepatic) see Calculus, bile duct
causing intestinal obstruction
K56.3 Gambling Sub-entries Z72.6 pathological (compulsive)
F63.0 Gammopathy (of undetermined significance [MGUS]) Sub-entries D47.2 associated with lymphoplasmacytic dyscrasia
D47.2 Gamna's disease (siderotic splenomegaly) Code D73.1 Gampsodactylia (congenital) Code Q66.7 Non-billable Gamstorp's disease (adynamia episodica hereditaria) Code G72.3 Gandy-Nanta disease (siderotic splenomegaly) Code D73.1 Gang Sub-entries
Ganglioglioma Cross-ref See: Neoplasm, uncertain behavior, by site
Ganglioneuroblastoma Cross-ref See: Neoplasm, nerve, malignant
Ganglioneuroma Sub-entries D36.10 malignant see Neoplasm, nerve, malignant
Ganglioneuromatosis Code D36.10 fifth nerve see Neuralgia, trigeminal
gasserian (postherpetic) (postzoster)
B02.21 newborn (birth injury)
P11.3 with diabetes (mellitus) see Diabetes, with, gangrene
Ganister disease Code J62.8 Ganser's syndrome (hysterical) Code F44.89 Gardner-Diamond syndrome (autoerythrocyte sensitization) Code D69.2 Garré's disease, osteitis (sclerosing), osteomyelitis Cross-ref See: Osteomyelitis, specified type NEC
Garrod's pad, knuckle Code M72.1 Gartner's duct Sub-entries
asphyxiation, inhalation, poisoning, suffocation NEC see Table of Drugs and Chemicals
following
Gastralgia Cross-ref See also: Pain, abdominal
Gastrectasis Sub-entries K31.0 Gastric Cross-ref See: condition malignant
specified site NEC see Neoplasm, malignant, by site
Gastrocarcinoma Cross-ref See: Neoplasm, malignant, stomach
Gastrocolic Cross-ref See: condition Gastrodisciasis, gastrodiscoidiasis Code B66.8 Gastroduodenitis Sub-entries K29.90 Gastrodynia Cross-ref See: Pain, abdominal
with
eosinophilic gastritis or gastroenteritis
K52.81 food protein-induced enterocolitis syndrome
K52.21 Gastroenteropathy Sub-entries K52.9 see also Gastroenteritis acute, due to Norwalk agent
A08.11 acute, due to Norovirus
A08.11 Gastroenteroptosis Code K63.4 Gastroesophageal laceration- hemorrhage syndrome Code K22.6 Gastrointestinal Cross-ref See: condition Gastrojejunal Cross-ref See: condition Gastrojejunitis Code K52.9 See also: Enteritis Gastrojejunocolic Cross-ref See: condition Gastroparalysis Sub-entries K31.84 diabetic see Diabetes, gastroparalysis
Gastroparesis Sub-entries K31.84 diabetic see Diabetes, by type, with gastroparesis
congestive portal (see also, Hypertension, portal)
K31.89 portal hypertensive (see also, Hypertension, portal)
K31.89 Gastrorrhagia Sub-entries K92.2 Gastroschisis (congenital) Code Q79.3 Gastrospasm (neurogenic) (reflex) Sub-entries K31.89 Gastrostaxis Cross-ref See: Gastritis, with bleeding
Gastrostenosis Code K31.89 Gastrostomy Sub-entries
Gastrosuccorrhea (continuous) (intermittent) Sub-entries K31.89 Gaucher's disease or splenomegaly (adult) (infantile) Code E75.22 Gee (-Herter) (-Thaysen) disease (nontropical sprue) Code K90.0 Gélineau's syndrome Sub-entries G47.419 Gemination, tooth, teeth Code K00.2 Gemistocytoma Sub-entries
specified site see Neoplasm, malignant, by site
General, generalized Cross-ref See: condition carrier (status)
hemophilia A (asymptomatic)
Z14.01 Genital Cross-ref See: condition Genito-anorectal syndrome Code A55 Genitourinary system Cross-ref See: condition extrorsum (acquired) see also Deformity, varus, knee
sequelae (late effect) of rickets
E64.3 Geographic tongue Code K14.1 Geophagia Cross-ref See: Pica Geotrichosis Sub-entries B48.3 Gephyrophobia Code F40.242 GERD (gastroesophageal reflux disease) Code K21.9 See also: Disease, gastroesophageal reflux Gerhardt's Sub-entries
disease (erythromelalgia)
I73.81 syndrome (vocal cord paralysis)
J38.00 German measles Sub-entries see also Rubella
Germinoblastoma (diffuse) Sub-entries C85.9 Non-billable follicular
C82.9 Non-billable Germinoma Cross-ref See: Neoplasm, malignant, by site
Gerontoxon Cross-ref See: Degeneration, cornea, senile
Gerstmann's syndrome Sub-entries R48.8 Gerstmann-Sträussler-Scheinker syndrome (GSS) Code A81.82 Gestation (period) Sub-entries see also Pregnancy
ectopic see Pregnancy, by site
multiple
O30.9 Non-billable greater than quadruplets see Pregnancy, multiple (gestation), specified NEC
specified NEC see Pregnancy, multiple (gestation), specified NEC
Gestational Sub-entries
mammary abscess
O91.11 Non-billable purulent mastitis
O91.11 Non-billable subareolar abscess
O91.11 Non-billable Ghon tubercle, primary infection Code A15.7 Ghost Sub-entries
vessels (cornea)
H16.41 Non-billable Gianotti-Crosti disease Code L44.4 cell
peripheral granuloma
K06.8 esophagus, congenital
Q39.5 Gibert's disease or pityriasis Code L42 Gierke's disease (glycogenosis I) Code E74.01 Gigantism (cerebral) (hypophyseal) (pituitary) Sub-entries E22.0 Gilbert's disease or syndrome Code E80.4 Gilchrist's disease Code B40.9 Gilford-Hutchinson disease Code E34.8 Gilles de la Tourette's disease or syndrome (motor-verbal tic) Code F95.2 Gingivoglossitis Code K14.0 Gingivopericementitis Cross-ref See: Periodontitis
Gingivosis Cross-ref See: Gingivitis, chronic Gingivostomatitis Sub-entries K05.10 necrotizing ulcerative (acute)
A69.1 Gland, glandular Cross-ref See: condition Glanzmann (-Naegeli) disease or thrombasthenia Code D69.1 Glasgow coma scale Sub-entries
Glass-blower's disease (cataract) Cross-ref See: Cataract, specified NEC
with
increased episcleral venous pressure
H40.81 Non-billable pseudoexfoliation of lens see Glaucoma, open angle, primary, capsular
Glaucomatous flecks (subcapsular) Cross-ref See: Cataract, complicated
Gleet (gonococcal) Code A54.01 Glénard's disease Code K63.4 with sarcomatous component
specified site see Neoplasm, malignant, by site
giant cell
astrocytic
specified site see Neoplasm, malignant, by site
mixed
Gliomatosis cerebri Code C71.0 Glioneuroma Cross-ref See: Neoplasm, uncertain behavior, by site
Gliosarcoma Sub-entries
specified site see Neoplasm, malignant, by site
Gliosis (cerebral) Sub-entries G93.89 Glisson's disease Cross-ref See: Rickets
Globus (hystericus) Code F45.8 Glomangioma Sub-entries D18.00 Glomangiomyoma Sub-entries D18.00 Glomangiosarcoma Cross-ref See: Neoplasm, connective tissue, malignant
Glomerular Sub-entries
nephritis see Glomerulonephritis
Glomerulitis Cross-ref See: Glomerulonephritis Glomerulonephritis Sub-entries N05.9 see also Nephritis Glomerulopathy Cross-ref See: Glomerulonephritis Glomerulosclerosis Sub-entries see also Sclerosis, renal
intercapillary (nodular) (with diabetes) see Diabetes, glomerulosclerosis
intracapillary see Diabetes, glomerulosclerosis
cortical superficial, sclerotic
K14.0 Glossodynia Sub-entries K14.6 Glottis Cross-ref See: condition Glottitis Code J04.0 See also: Laryngitis Glucoglycinuria Code E72.51 Glucose-galactose malabsorption Code E74.39 Glue Sub-entries
ear see Otitis, media, nonsuppurative, chronic, mucoid
sniffing (airplane) see Abuse, drug, inhalant
dependence see Dependence, drug, inhalant
GLUT1 deficiency syndrome 1, infantile onset Code E74.810 GLUT1 deficiency syndrome 2, childhood onset Code E74.810 Glutaric aciduria Code E72.3 Glycinuria (renal) (with ketosis) Code E72.09 Glycogen Sub-entries
infiltration see Disease, glycogen storage
storage disease see Disease, glycogen storage
Glycogenosis (diffuse) (generalized) Sub-entries see also Disease, glycogen storage
diabetic, secondary see Diabetes, glycogenosis, secondary
Glycosuria Sub-entries R81 Gnathostoma spinigerum (infection) (infestation), gnathostomiasis (wandering swelling) Code B83.1 with
hyperthyroidism (recurrent) see Hyperthyroidism, with, goiter
thyrotoxicosis see Hyperthyroidism, with, goiter
adenomatous see Goiter, nodular
Goiter-deafness syndrome Code E07.1 Goldberg syndrome Code Q89.89 Goldberg-Maxwell syndrome Code E34.51 Goldblatt's hypertension or kidney Code I70.1 Goldenhar (-Gorlin) syndrome Code Q87.0 Goldflam-Erb disease or syndrome Sub-entries G70.00 with exacerbation (acute)
G70.01 Goldscheider's disease Code Q81.8 Goldstein's disease (familial hemorrhagic telangiectasia) Code I78.0 Golfer's elbow Cross-ref See: Epicondylitis, medial
Gonadoblastoma Sub-entries
specified site see Neoplasm, uncertain behavior, by site
unspecified site
Gonecystitis Cross-ref See: Vesiculitis
Gongylonemiasis Code B83.8 Goniosynechiae Cross-ref See: Adhesions, iris, goniosynechiae
conjunctiva, conjunctivitis (neonatorum)
A54.31 Gonocytoma Sub-entries
specified site see Neoplasm, uncertain behavior, by site
unspecified site
Bartholin's gland (acute) (chronic) (purulent)
A54.02 with abscess (accessory gland) (periurethral)
A54.1 Goodall's disease Code A08.19 Goodpasture's syndrome Code M31.0 Gopalan's syndrome (burning feet) Code E53.0 Gorlin-Chaudry-Moss syndrome Code Q87.0 Gottron's papules Code L94.4 Gougerot-Blum syndrome (pigmented purpuric lichenoid dermatitis) Code L81.7 Gougerot-Carteaud disease or syndrome (confluent reticulate papillomatosis) Code L83 Gougerot's syndrome (trisymptomatic) Code L81.7 Gouley's syndrome (constrictive pericarditis) Code I31.1 Gout, chronic Sub-entries M1A.9 Non-billable see also Gout, gouty drug-induced
M1A.20 Non-billable foot joint
M1A.27 Non-billable foot joint
M10.27 Non-billable Gower's Sub-entries
syndrome (vasovagal attack)
R55 Gradenigo's syndrome Cross-ref See: Otitis, media, suppurative, acute
Graefe's disease Cross-ref See: Strabismus, paralytic, ophthalmoplegia, progressive
Graft-versus-host disease Sub-entries D89.813 Grain mite (itch) Code B88.09 Grainhandler's disease or lung Code J67.8 Grand mal Cross-ref See: Epilepsy, generalized, specified NEC
Grand multipara status only (not pregnant) Sub-entries Z64.1 pregnant see Pregnancy, complicated by, grand multiparity
Granite worker's lung Code J62.8 Granular Sub-entries see also condition
inflammation, pharynx
J31.2 kidney (contracting) see Sclerosis, renal
Granulation tissue (abnormal) (excessive) Sub-entries L92.9 postmastoidectomy cavity see Complications, postmastoidectomy, granulation
Granulocytopenia (primary) (malignant) Cross-ref See: Agranulocytosis
from residual foreign body
L92.3 with polyangiitis
M31.3 Non-billable eosinophilic, with polyangiitis [EGPA]
M30.1 lymphoid
C83.8 Non-billable Granulomatous tissue (abnormal) (excessive) Code L92.9 Granulosis rubra nasi Code L74.8 Graphite fibrosis (of lung) Code J63.3 Graphospasm Sub-entries F48.8 Grating scapula Code M89.8X1 Gravel (urinary) Cross-ref See: Calculus, urinary
Graves' disease Cross-ref See: Hyperthyroidism, with, goiter
Gravis Cross-ref See: condition Gray syndrome (newborn) Code P93.0 Grayness, hair (premature) Sub-entries L67.1 Greenfield's disease Sub-entries
meaning
concentric sclerosis (encephalitis periaxialis concentrica)
G37.5 metachromatic leukodystrophy
E75.25 Greenstick fracture - code as Fracture, by site Term
Grey syndrome (newborn) Code P93.0 reaction
F43.20 see also Disorder, adjustment Griesinger's disease Code B76.0 Grinder's lung or pneumoconiosis Code J62.8 Grinding, teeth Sub-entries
Grip Sub-entries
Grippe, grippal Sub-entries see also Influenza
Grisel's disease Code M43.6 Groin Cross-ref See: condition Grover's disease or syndrome Code L11.1 Growing pains, children Code R29.898 adenoid (vegetative)
J35.8 benign see Neoplasm, benign, by site
malignant see Neoplasm, malignant, by site
Gruby's disease Code B35.0 Guardianship by non-parental relative Code Z62.23 Gubler-Millard paralysis or syndrome Code G46.3 Guerin-Stern syndrome Code Q74.3 Guidance, insufficient anterior (occlusal) Code M26.54 Guillain-Barré disease or syndrome Sub-entries G61.0 Guinea worms (infection) (infestation) Code B72 Guinon's disease (motor-verbal tic) Code F95.2 Gum Cross-ref See: condition Gunn's syndrome Code Q07.8 Gunshot wound Sub-entries see also Puncture, open
fracture - code as Fracture, by site
internal organs see Injury, by site
Gynandroblastoma Sub-entries
specified site see Neoplasm, uncertain behavior, by site
unspecified site
Gynecological examination (periodic) (routine) Sub-entries Z01.419 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.
