ICD-10-CM Alphabetic Index · FY 2026 Letter L
Index Terms Starting With L ICD-10-CM
Home › ICD-10-CM Codes List › Index to Diseases and Injuries › LThe letter L section of the FY 2026 Alphabetic Index carries 341 main terms , from Labia to Lyssa. 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
Labia, labium Cross-ref See: condition Labile Sub-entries
Labioglossal paralysis Code G12.29 Labium leporinum Cross-ref See: Cleft, lip
Labor Cross-ref See: Delivery
Labored breathing Cross-ref See: Hyperventilation
Labyrinthitis (circumscribed) (destructive) (diffuse) (inner ear) (latent) (purulent) (suppurative) Sub-entries H83.0 Non-billable see also subcategory with abortion see Abortion, by type, complicated by laceration of pelvic organs
abdomen, abdominal
with
achievement in school
Z55.3 adequate
intermaxillary vertical dimension of fully erupted teeth
M26.36 Lacrimal Cross-ref See: condition Lacrimation, abnormal Cross-ref See: Epiphora Lacrimonasal duct Cross-ref See: condition Lactate, elevated Cross-ref See: Acidosis, lactic Lacticemia, excessive Code E87.20 See also: Acidosis LAD (leukocyte adhesion deficiency) (LAD-I) (LAD-II) (LAD-III) Code D71.1 Laennec's cirrhosis Sub-entries K70.30 Lafora disease Code G40.C09 See also: Epilepsy, progressive, Lafora Lag, lid (nervous) Cross-ref See: Retraction, lid bilateral, upper and lower eyelids
H02.20C bilateral, upper and lower eyelids
H02.21C Laki-Lorand factor deficiency Cross-ref See: Defect, coagulation, specified type NEC
Lambert-Eaton syndrome Cross-ref See: Syndrome, Lambert-Eaton Lambliasis, lambliosis Code A07.1 Landau-Kleffner syndrome Cross-ref See: Epilepsy, specified NEC
Landouzy-Déjérine dystrophy or facioscapulohumeral atrophy Code G71.02 Landouzy's disease (icterohemorrhagic leptospirosis) Code A27.0 Landry-Guillain-Barré, syndrome or paralysis Code G61.0 Landry's disease or paralysis Code G61.0 Lane's Sub-entries
kink see Obstruction, intestine
Langdon Down syndrome Cross-ref See: Trisomy, 21
Lapsed immunization schedule status Code Z28.39 Large Sub-entries
baby (regardless of gestational age) (4000g to 4499g)
P08.1 Large-for-dates NEC (infant) (4000g to 4499g) Sub-entries P08.1 affecting management of pregnancy
O36.6 Non-billable exceptionally (4500g or more)
P08.0 Larsen-Johansson disease or osteochondrosis Cross-ref See: Osteochondrosis, juvenile, patella Larsen's syndrome (flattened facies and multiple congenital dislocations) Code Q74.8 Larva migrans Sub-entries
Laryngeal Cross-ref See: condition Laryngismus (stridulus) Sub-entries J38.5 with
influenza, flu, or grippe see Influenza, with, laryngitis
tracheitis (acute) see Laryngotracheitis
Laryngocele (congenital) (ventricular) Code Q31.3 Laryngofissure Sub-entries J38.7 Laryngomalacia (congenital) Code Q31.5 Laryngopharyngitis (acute) Sub-entries J06.0 due to external agent see Inflammation, respiratory, upper, due to
Laryngoplegia Sub-entries J38.00 Laryngostenosis Code J38.6 Laryngotracheobronchitis Cross-ref See: Bronchitis
Larynx, laryngeal Cross-ref See: condition Lassitude Cross-ref See: Weakness
Late Sub-entries
Late effect (s) Cross-ref See: Sequelae
Latent Cross-ref See: condition Laterocession Cross-ref See: Lateroversion Lateroflexion Cross-ref See: Lateroversion Lateroversion Sub-entries
cervix see Lateroversion, uterus
uterus, uterine (cervix) (postinfectional) (postpartal, old)
N85.4 in pregnancy or childbirth
O34.59 Non-billable Lathyrism Cross-ref See: Poisoning, food, noxious, plant
Launois' syndrome (pituitary gigantism) Code E22.0 Launois-Bensaude adenolipomatosis Code E88.89 Laurence-Moon syndrome Code Q87.84 Lax, laxity Sub-entries see also Relaxation ligament (ous) see also Disorder, ligament
knee see Derangement, knee
Lazy leukocyte syndrome Code D70.8 LBSL (leukoencephalopathy with brainstem - spinal cord involvement - lactate elevation) Code E88.43 Lead miner's lung Code J63.6 amniotic fluid see Rupture, membranes, premature
blood (microscopic), fetal, into maternal circulation affecting management of pregnancy see Pregnancy, complicated by
Leaky heart Cross-ref See: Endocarditis
Learning defect (specific) Code F81.9 Leather bottle stomach Code C16.9 Leber's Sub-entries
optic atrophy (hereditary)
H47.22 Lederer's anemia Code D59.19 Leeches (external) Cross-ref See: Hirudiniasis Leg Cross-ref See: condition Legg (-Calvé)-Perthes disease, syndrome or osteochondrosis Code M91.1 Non-billable Legionellosis Sub-entries A48.1 Legionnaires' Sub-entries
Leigh's disease Code G31.82 Leiner's disease Code L21.1 Leiofibromyoma Cross-ref See: Leiomyoma Leiomyoblastoma Cross-ref See: Neoplasm, connective tissue, benign
Leiomyofibroma Sub-entries see also Neoplasm, connective tissue, benign
uterus (cervix) (corpus)
D25.9 Leiomyoma Sub-entries see also Neoplasm, connective tissue, benign bizarre see Neoplasm, connective tissue, benign
cellular see Neoplasm, connective tissue, benign
epithelioid see Neoplasm, connective tissue, benign
uterus (cervix) (corpus)
D25.9 Leiomyoma, leiomyomatosis (intravascular) Cross-ref See: Neoplasm, connective tissue, uncertain behavior
Leiomyosarcoma Sub-entries see also Neoplasm, connective tissue, malignant
epithelioid see Neoplasm, connective tissue, malignant
myxoid see Neoplasm, connective tissue, malignant
American (mucocutaneous)
B55.2 Leishmanoid, dermal Sub-entries see also Leishmaniasis, cutaneous
Lenegre's disease Code I44.2 Lengthening, leg Cross-ref See: Deformity, limb, unequal length Lennert's lymphoma Cross-ref See: Lymphoma, Lennert's
Lens Cross-ref See: condition Lenticonus (anterior) (posterior) (congenital) Code Q12.8 Lenticular degeneration, progressive Code E83.01 Lentiglobus (posterior) (congenital) Code Q12.8 Lentigo (congenital) Sub-entries L81.4 maligna see also Melanoma, in situ
melanoma see Melanoma
Lentivirus, as cause of disease classified elsewhere Code B97.31 Leontiasis Sub-entries
Lepra Cross-ref See: Leprosy with muscle disorder
A30.9 Leptocytosis, hereditary Code D56.9 Leptomeningitis (chronic) (circumscribed) (hemorrhagic) (nonsuppurative) Cross-ref See: Meningitis
Leptomeningopathy Code G96.198 Leptospiral Cross-ref See: condition Leptospirochetal Cross-ref See: condition due to Leptospira interrogans serovar icterohaemorrhagiae
A27.0 Leptus dermatitis Code B88.09 Leriche's syndrome (aortic bifurcation occlusion) Code I74.09 Leri's pleonosteosis Code Q78.8 Leri-Weill syndrome Code Q77.8 Lermoyez' syndrome Cross-ref See: Vertigo, peripheral NEC Lesch-Nyhan syndrome Code E79.1 Leser-Trélat disease Sub-entries L82.1 abducens nerve see Strabismus, paralytic, sixth nerve
angiocentric immunoproliferative
D47.Z9 Less than a high school diploma Code Z55.5 Lethargic Cross-ref See: condition Letterer-Siwe's disease Code C96.0 Leukemia, leukemic Sub-entries C95.9 Non-billable acute basophilic
C94.8 Non-billable acute bilineal
C95.0 Non-billable acute erythroid
C94.0 Non-billable acute lymphoblastic
C91.0 Non-billable Leukemoid reaction Code D72.823 See also: Reaction, leukemoid Leukoaraiosis (hypertensive) Code I67.81 Leukoariosis Cross-ref See: Leukoaraiosis
Leukocoria Cross-ref See: Disorder, globe, degenerated condition, leucocoria
Leukocytopenia Code D72.819 Leukocytosis Sub-entries D72.829 Leukoderma, leukodermia NEC Sub-entries L81.5 Leukodystrophy Sub-entries G31.80 with vanishing white matter disease
G11.6 LMNB1-related autosomal dominant
G90.B Leukoedema, oral epithelium Code K13.29 acute (subacute) hemorrhagic
G36.1 postimmunization or postvaccinal
G04.02 subacute sclerosing
A81.1 Leukoencephalopathy Sub-entries G93.49 see also Encephalopathy with
brainstem - spinal cord involvement - lactate elevation
E88.43 calcifications and cysts
G93.43 thalamus - brainstem involvement - high lactate
E88.43 Leukoerythroblastosis Code D75.9 Leukokeratosis Sub-entries see also Leukoplakia Leukokraurosis vulva (e) Code N90.4 Leukoma (cornea) Sub-entries see also Opacity, cornea
adherent
H17.0 Non-billable interfering with central vision see Opacity, cornea, central
Leukomalacia, cerebral, newborn Sub-entries P91.2 Leukomelanopathy, hereditary Code D72.0 Leukonychia (punctata) (striata) Sub-entries L60.8 Leukopathia unguium Sub-entries L60.8 chemotherapy (cancer) induced
D70.1 Leukopenic Cross-ref See: condition bladder (postinfectional)
N32.89 Leukorrhea Sub-entries N89.8 due to Trichomonas (vaginalis)
A59.00 Leukosarcoma Code C85.9 Non-billable Levocardia (isolated) Sub-entries Q24.1 with situs inversus
Q89.3 Levotransposition Code Q20.5 Lev's disease or syndrome (acquired complete heart block) Code I44.2 Levulosuria Cross-ref See: Fructosuria
Lewy body (ies) (disease) Code G31.83 Leyden-Möbius dystrophy Cross-ref See: Dystrophy, Leyden-Möbius
carcinoma
specified site see Neoplasm, malignant, by site
unspecified site
Leydig-Sertoli cell tumor Sub-entries
specified site see Neoplasm, benign, by site
unspecified site
LGMD Cross-ref See: Dystrophy, muscular, limb-girdle
LGSIL (Low grade squamous intraepithelial lesion on cytologic smear of) Sub-entries
Liar, pathologic Code F60.2 Libido Sub-entries
Libman-Sacks disease Code M32.11 body (Pediculus corporis)
B85.1 head (Pediculus capitis)
B85.0 mixed (classifiable to more than one of the titles B85.0-B85.3)
B85.4 Lichenification Code L28.0 Lichenoid keratosis Cross-ref See: Keratosis, lichenoid Lichenoides tuberculosis (primary) Code A18.4 Lichtheim's disease or syndrome Code D51.0 Ligament Cross-ref See: condition Light Sub-entries
for gestational age see Light for dates
Lightning (effects) (stroke) (struck by) Sub-entries T75.00 Non-billable burn see Burn
specified effect NEC
T75.09 Non-billable Lightwood-Albright syndrome Code N25.89 Lightwood's disease or syndrome (renal tubular acidosis) Code N25.89 Lignac (-de Toni) (-Fanconi) (-Debré) disease or syndrome Sub-entries E72.09 Ligneous thyroiditis Code E06.5 Likoff's syndrome Code I20.89 Limb Cross-ref See: condition Limbic epilepsy personality syndrome Code F07.0 Limitation, limited Sub-entries
activities due to disability
Z73.6 cardiac reserve see Disease, heart
eye muscle duction, traumatic see Strabismus, mechanical
mandibular range of motion
M26.52 Lindau (-von Hippel) disease Code Q85.83 Line (s) Sub-entries
Harris' see Arrest, epiphyseal
Hudson's (cornea) see Pigmentation, cornea, anterior
Stähli's (cornea) see Pigmentation, cornea, anterior
Linea corneae senilis Cross-ref See: Change, cornea, senile
Lingua Sub-entries
Lingual Cross-ref See: condition Linitis (gastric) plastica Code C16.9 Lip Cross-ref See: condition Lipedema Cross-ref See: Edema
Lipemia Sub-entries see also Hyperlipidemia
cerebral (infantile) (juvenile) (late)
E75.4 cholesterol (cerebral)
E75.5 Lipoadenoma Cross-ref See: Neoplasm, benign, by site
Lipoblastoma Cross-ref See: Lipoma Lipoblastomatosis Cross-ref See: Lipoma Lipochondrodystrophy Code E76.01 Lipochrome histiocytosis (familial) Code D71.8 Lipodermatosclerosis Sub-entries M79.3 see also Insufficiency, venous with
varicose veins see Varix, leg, with, inflammation
ulcerated see Varix, leg, with, ulcer, with inflammation by site
ulcerated see Ulcer, by site
Lipodystrophia progressiva Code E88.11 generalized (acquired) (congenital)
E88.12 Lipofibroma Cross-ref See: Lipoma Lipofuscinosis, neuronal (with ceroidosis) Code E75.4 Lipogranuloma, sclerosing Code L92.8 Lipogranulomatosis Code E78.89 Lipoid Sub-entries see also condition
Lipoidemia Cross-ref See: Hyperlipidemia
Lipoidosis Cross-ref See: Lipidosis Lipomatosis Sub-entries E88.2 Lipomyoma Cross-ref See: Lipoma Lipomyxoma Cross-ref See: Lipoma Lipomyxosarcoma Cross-ref See: Neoplasm, connective tissue, malignant
Lipoprotein metabolism disorder Code E78.9 Lipoproteinemia Sub-entries E78.5 Liposarcoma Sub-entries see also Neoplasm, connective tissue, malignant dedifferentiated see Neoplasm, connective tissue, malignant
differentiated type see Neoplasm, connective tissue, malignant
embryonal see Neoplasm, connective tissue, malignant
mixed type see Neoplasm, connective tissue, malignant
Liposynovitis prepatellaris Code E88.89 Lipschütz disease or ulcer Code N76.6 schistosomiasis (bilharziasis)
B65.0 Lissauer's paralysis Code A52.17 Lissencephalia, lissencephaly Code Q04.3 congenital (disseminated)
P37.2 neonatal, newborn (disseminated)
P37.2 Lithiasis Cross-ref See: Calculus
Litigation, anxiety concerning Code Z65.3 Little leaguer's elbow Cross-ref See: Epicondylitis, medial
Little's disease Code G80.9 Littre's Sub-entries
gland see condition
hernia see Hernia, abdomen
Littritis Cross-ref See: Urethritis
Livedo (annularis) (racemosa) (reticularis) Code R23.1 Liver Cross-ref See: condition Lives in a homeless encampment Code Z59.02 Living alone (problems with) Sub-entries Z60.2 with handicapped person
Z74.2 Living in a shelter (motel) (scattered site housing) (temporary or transitional living situation) Code Z59.01 Lloyd's syndrome Cross-ref See: Adenomatosis, endocrine Loa loa (loiasis) Code B74.3 Lobar Cross-ref See: condition Lobotomy syndrome Code F07.0 Lobstein (-Ekman) disease or syndrome Code Q78.0 Lobster-claw hand Code Q71.6 Non-billable Lobulation (congenital) Sub-entries see also Anomaly, by site
Lobule, lobular Cross-ref See: condition Local, localized Cross-ref See: condition Locked twins causing obstructed labor Code O66.1 Locked-in state Code G83.5 Locking Sub-entries
joint see Derangement, joint, specified type NEC
knee see Derangement, knee
Lockjaw Cross-ref See: Tetanus
Löffler's Sub-entries
syndrome (eosinophilic pneumonitis)
J82.89 Loiasis (with conjunctival infestation) (eyelid) Code B74.3 Lone Star fever Code A77.0 COVID (-19)
U09.9 see also COVID-19 Longitudinal stripes or grooves, nails Sub-entries L60.8 agents affecting estrogen receptors and estrogen levels NEC
Z79.818 Loop Sub-entries
intestine see Volvulus
vascular on papilla (optic)
Q14.2 Loose Sub-entries see also condition aseptic
joint prosthesis see Complications, joint prosthesis, mechanical, loosening, by site
epiphysis see Osteochondropathy
mechanical
Looser-Milkman (-Debray) syndrome Code M83.8 Lop ear (deformity) Code Q17.3 Lorain (-Levi) short stature syndrome Code E23.0 acquired see Lordosis, specified type NEC
appetite (see Anorexia)
R63.0 Louis-Bar syndrome (ataxia-telangiectasia) Code G11.3 Louping ill (encephalitis) Code A84.89 Louse, lousiness Cross-ref See: Lice
basal metabolic rate
R94.8 birthweight (2499 grams or less)
P07.10 Low-density-lipoprotein-type (LDL) hyperlipoproteinemia Code E78.00 Lowe's syndrome Code E72.03 Lown-Ganong-Levine syndrome Code I45.6 LSD reaction (acute) (without dependence) Sub-entries F16.90 L-shaped kidney Code Q63.8 LTBI (latent tuberculosis infection) Code Z22.7 LTBL (leukoencephalopathy with thalamus - brainstem involvement - high lactate) Code E88.43 Ludwig's angina or disease Code K12.2 Lues (venerea), luetic Cross-ref See: Syphilis
Luetscher's syndrome (dehydration) Code E86.0 Lumbago, lumbalgia Sub-entries M54.50 with sciatica
M54.4 Non-billable due to intervertebral disc disorder
M51.17 due to displacement, intervertebral disc
M51.27 Lumbar Cross-ref See: condition Lumbarization, vertebra, congenital Code Q76.49 Lumbermen's itch Code B88.09 Lump Sub-entries see also Mass Lunacy Cross-ref See: Psychosis
Lung Cross-ref See: condition Lupoid (miliary) of Boeck Code D86.3 Lutembacher's disease or syndrome (atrial septal defect with mitral stenosis) Code Q21.19 Lutz (-Splendore-de Almeida) disease Cross-ref See: Paracoccidioidomycosis Luxation Sub-entries see also Dislocation eyeball (nontraumatic) see Luxation, globe
globe, nontraumatic
H44.82 Non-billable lacrimal gland see Dislocation, lacrimal gland
Lyell's syndrome Sub-entries L51.2 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
Lymph Sub-entries
gland or node see condition
scrotum see Infestation, filarial
with ectopic or molar pregnancy
O08.0 Lymphadenoid goiter Code E06.3 angioimmunoblastic, with dysproteinemia (AILD)
C86.5 Non-billable due to toxoplasmosis (acquired)
B58.89 congenital (acute) (subacute) (chronic)
P37.1 Lymphangiectasis Sub-entries I89.0 Lymphangiectatic elephantiasis, nonfilarial Code I89.0 Lymphangioendothelioma Sub-entries D18.1 malignant see Neoplasm, connective tissue, malignant
Lymphangioleiomyomatosis Code J84.81 Lymphangioma Sub-entries D18.1 malignant see Neoplasm, connective tissue, malignant
Lymphangiomyoma Code D18.1 Lymphangiomyomatosis Code J84.81 Lymphangiosarcoma Cross-ref See: Neoplasm, connective tissue, malignant
with
abscess - code by site under Abscess
cellulitis - code by site under Cellulitis
ectopic or molar pregnancy
O08.0 Lymphatic (vessel) Cross-ref See: condition Lymphedema (acquired) Sub-entries see also Elephantiasis hereditary (chronic) (idiopathic)
Q82.0 Lymphoblastic Cross-ref See: condition Lymphoblastoma (diffuse) Sub-entries see Lymphoma, lymphoblastic (diffuse)
giant follicular see Lymphoma, lymphoblastic (diffuse)
macrofollicular see Lymphoma, lymphoblastic (diffuse)
Lymphocytic Sub-entries
chorioencephalitis (acute) (serous)
A87.2 choriomeningitis (acute) (serous)
A87.2 meningoencephalitis
A87.2 Lymphocytoma, benign cutis Code L98.8 Lymphocytopenia Code D72.810 Lymphocytosis (symptomatic) Sub-entries D72.820 Lymphoepithelioma Cross-ref See: Neoplasm, malignant, by site
Lymphogranuloma (malignant) Sub-entries see also Lymphoma, Hodgkin
venereum (any site) (chlamydial) (with stricture of rectum)
A55 Lymphogranulomatosis (malignant) Sub-entries see also Lymphoma, Hodgkin
benign (Boeck's sarcoid) (Schaumann's)
D86.1 Lymphohistiocytosis, hemophagocytic (familial) Code D76.1 Lymphoid Cross-ref See: condition adult T-cell (HTLV-1-associated) (acute variant) (chronic variant) (lymphomatoid variant) (smouldering variant)
C91.5 Non-billable anaplastic large cell
ALK-negative
C84.7 Non-billable ALK-positive
C84.6 Non-billable Lymphomatosis Cross-ref See: Lymphoma
Lymphopathia venereum, veneris Code A55 Lymphoplasmacytic leukemia Cross-ref See: Leukemia, chronic lymphocytic, B-cell type
Lymphoproliferation, X-linked disease Code D82.3 Lymphoreticulosis, benign (of inoculation) Code A28.1 Lymphosarcoma (diffuse) Code C85.9 Non-billable See also: Lymphoma Lypemania Cross-ref See: Melancholia Lysine and hydroxylysine metabolism disorder Code E72.3 Lyssa Cross-ref See: Rabies 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.
