ICD-10-CM Tag List · Encounter Type · FY 2026 51,485 Codes

2026 7th Character Codes ICD-10-CM Codes ICD-10-CM

The FY 2026 dataset contains 51,485 7th character codes codes across 445 code blocks. These codes require a seventh character to indicate the type of encounter: initial (A), subsequent (D), or sequela (S), with additional values for some fracture codes. They cover injuries, poisonings, fractures, and other external cause conditions.

✓ Built from the official CMS FY 2026 datasetEffective Oct 1, 2025 – Sep 30, 2026
51,485
Codes
445
Code Blocks
51,485
Billable
FY 2026
Dataset

Coding Guidance

A 7th character code reported without its 7th character is not billable. When the code has fewer than six characters, the placeholder X fills the empty positions before the 7th character.

ICD-10-CM

Code Blocks With 7th Character Codes Codes 445 blocks · 51,485 codes

445 of 445 shown
BlockCode Group7th Character Codes Codes
C44Other and unspecified malignant neoplasm of skin20
E08Diabetes mellitus due to underlying condition52
E09Drug or chemical induced diabetes mellitus52
E10Type 1 diabetes mellitus52
E11Type 2 diabetes mellitus52
E13Other specified diabetes mellitus52
G71Primary disorders of muscles4
H34Retinal vascular occlusions24
H35Other retinal disorders36
H40Glaucoma190
H54Blindness and low vision35
J34Other and unspecified disorders of nose and nasal sinuses6
K63Other diseases of intestine3
L98Other disorders of skin and subcutaneous tissue, not elsewhere classified72
M1AChronic gout242
M48Other spondylopathies72
M80Osteoporosis with current pathological fracture324
M84Disorder of continuity of bone900
M97Periprosthetic fracture around internal prosthetic joint36
O31Complications specific to multiple gestation140
O32Maternal care for malpresentation of fetus56
O33Maternal care for disproportion35
O35Maternal care for known or suspected fetal abnormality and damage231
O36Maternal care for other fetal problems399
O40Polyhydramnios28
O41Other disorders of amniotic fluid and membranes168
O60Preterm labor49
O64Obstructed labor due to malposition and malpresentation of fetus56
O69Labor and delivery complicated by umbilical cord complications70
QA0Neurodevelopmental disorders related to specific genetic pathogenic variants10
R40Somnolence, stupor and coma95
S00Superficial injury of head288
S01Open wound of head270
S02Fracture of skull and facial bones456
S03Dislocation and sprain of joints and ligaments of head36
S04Injury of cranial nerve114
S05Injury of eye and orbit90
S06Intracranial injury569
S07Crushing injury of head12
S08Avulsion and traumatic amputation of part of head30
S09Other and unspecified injuries of head69
S10Superficial injury of neck72
S11Open wound of neck129
S12Fracture of cervical vertebra and other parts of neck420
S13Dislocation and sprain of joints and ligaments at neck level75
S14Injury of nerves and spinal cord at neck level183
S15Injury of blood vessels at neck level150
S16Injury of muscle, fascia and tendon at neck level12
S17Crushing injury of neck9
S19Other specified and unspecified injuries of neck24
S20Superficial injury of thorax294
S21Open wound of thorax288
S22Fracture of rib(s), sternum and thoracic spine354
S23Dislocation and sprain of joints and ligaments of thorax111
S24Injury of nerves and spinal cord at thorax level93
S25Injury of blood vessels of thorax195
S26Injury of heart42
S27Injury of other and unspecified intrathoracic organs162
S28Crushing injury of thorax, and traumatic amputation of part of thorax24
S29Other and unspecified injuries of thorax42
S30Superficial injury of abdomen, lower back, pelvis and external genitals216
S31Open wound of abdomen, lower back, pelvis and external genitals558
S32Fracture of lumbar spine and pelvis846
S33Dislocation and sprain of joints and ligaments of lumbar spine and pelvis57
S34Injury of lumbar and sacral spinal cord and nerves at abdomen, lower back and pelvis level93
S35Injury of blood vessels at abdomen, lower back and pelvis level222
S36Injury of intra-abdominal organs336
S37Injury of urinary and pelvic organs249
S38Crushing injury and traumatic amputation of abdomen, lower back, pelvis and external genitals39
S39Other and unspecified injuries of abdomen, lower back, pelvis and external genitals63
S40Superficial injury of shoulder and upper arm144
S41Open wound of shoulder and upper arm108
S42Fracture of shoulder and upper arm1,398
S43Dislocation and sprain of joints and ligaments of shoulder girdle333
S44Injury of nerves at shoulder and upper arm level72
S45Injury of blood vessels at shoulder and upper arm level162
S46Injury of muscle, fascia and tendon at shoulder and upper arm level216
S47Crushing injury of shoulder and upper arm9
S48Traumatic amputation of shoulder and upper arm54
S49Other and unspecified injuries of shoulder and upper arm234
S50Superficial injury of elbow and forearm144
S51Open wound of elbow and forearm108
S52Fracture of forearm2,796
S53Dislocation and sprain of joints and ligaments of elbow261
S54Injury of nerves at forearm level54
S55Injury of blood vessels at forearm level135
S56Injury of muscle, fascia and tendon at forearm level432
S57Crushing injury of elbow and forearm18
S58Traumatic amputation of elbow and forearm54
S59Other and unspecified injuries of elbow and forearm360
S60Superficial injury of wrist, hand and fingers522
S61Open wound of wrist, hand and fingers576
S62Fracture at wrist and hand level1,911
S63Dislocation and sprain of joints and ligaments at wrist and hand level921
S64Injury of nerves at wrist and hand level84
S65Injury of blood vessels at wrist and hand level279
S66Injury of muscle, fascia and tendon at wrist and hand level540
S67Crushing injury of wrist, hand and fingers75
S68Traumatic amputation of wrist, hand and fingers192
S69Other and unspecified injuries of wrist, hand and finger(s)18
S70Superficial injury of hip and thigh144
S71Open wound of hip and thigh108
S72Fracture of femur2,466
S73Dislocation and sprain of joint and ligaments of hip126
S74Injury of nerves at hip and thigh level45
S75Injury of blood vessels at hip and thigh level162
S76Injury of muscle, fascia and tendon at hip and thigh level216
S77Crushing injury of hip and thigh27
S78Traumatic amputation of hip and thigh54
S79Other and unspecified injuries of hip and thigh198
S80Superficial injury of knee and lower leg144
S81Open wound of knee and lower leg108
S82Fracture of lower leg, including ankle3,096
S83Dislocation and sprain of joints and ligaments of knee351
S84Injury of nerves at lower leg level45
S85Injury of blood vessels at lower leg level270
S86Injury of muscle, fascia and tendon at lower leg level216
S87Crushing injury of lower leg18
S88Traumatic amputation of lower leg54
S89Other and unspecified injuries of lower leg378
S90Superficial injury of ankle, foot and toes306
S91Open wound of ankle, foot and toes360
S92Fracture of foot and toe, except ankle1,386
S93Dislocation and sprain of joints and ligaments at ankle, foot and toe level336
S94Injury of nerves at ankle and foot level54
S95Injury of blood vessels at ankle and foot level135
S96Injury of muscle and tendon at ankle and foot level180
S97Crushing injury of ankle and foot45
S98Traumatic amputation of ankle and foot108
S99Other and unspecified injuries of ankle and foot414
T07Unspecified multiple injuries3
T14Injury of unspecified body region9
T15Foreign body on external eye36
T16Foreign body in ear9
T17Foreign body in respiratory tract150
T18Foreign body in alimentary tract45
T19Foreign body in genitourinary tract21
T20Burn and corrosion of head, face, and neck264
T21Burn and corrosion of trunk216
T22Burn and corrosion of shoulder and upper limb, except wrist and hand528
T23Burn and corrosion of wrist and hand648
T24Burn and corrosion of lower limb, except ankle and foot360
T25Burn and corrosion of ankle and foot288
T26Burn and corrosion confined to eye and adnexa90
T27Burn and corrosion of respiratory tract24
T28Burn and corrosion of other internal organs54
T33Superficial frostbite111
T34Frostbite with tissue necrosis111
T36Poisoning by, adverse effect of and underdosing of systemic antibiotics198
T37Poisoning by, adverse effect of and underdosing of other systemic anti-infectives and antiparasitics144
T38Poisoning by, adverse effect of and underdosing of hormones and their synthetic substitutes and antagonists, not elsewhere classified234
T39Poisoning by, adverse effect of and underdosing of nonopioid analgesics, antipyretics and antirheumatics162
T40Poisoning by, adverse effect of and underdosing of narcotics and psychodysleptics [hallucinogens]258
T41Poisoning by, adverse effect of and underdosing of anesthetics and therapeutic gases126
T42Poisoning by, adverse effect of and underdosing of antiepileptic, sedative- hypnotic and antiparkinsonism drugs162
T43Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified354
T44Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system198
T45Poisoning by, adverse effect of and underdosing of primarily systemic and hematological agents, not elsewhere classified270
T46Poisoning by, adverse effect of and underdosing of agents primarily affecting the cardiovascular system198
T47Poisoning by, adverse effect of and underdosing of agents primarily affecting the gastrointestinal system180
T48Poisoning by, adverse effect of and underdosing of agents primarily acting on smooth and skeletal muscles and the respiratory system180
T49Poisoning by, adverse effect of and underdosing of topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinorlaryngological and dental drugs180
T50Poisoning by, adverse effect of and underdosing of diuretics and other and unspecified drugs, medicaments and biological substances342
T51Toxic effect of alcohol72
T52Toxic effect of organic solvents84
T53Toxic effect of halogen derivatives of aliphatic and aromatic hydrocarbons108
T54Toxic effect of corrosive substances60
T55Toxic effect of soaps and detergents24
T56Toxic effect of metals144
T57Toxic effect of other inorganic substances72
T58Toxic effect of carbon monoxide60
T59Toxic effect of other gases, fumes and vapors132
T60Toxic effect of pesticides84
T61Toxic effect of noxious substances eaten as seafood72
T62Toxic effect of other noxious substances eaten as food60
T63Toxic effect of contact with venomous animals and plants456
T64Toxic effect of aflatoxin and other mycotoxin food contaminants24
T65Toxic effect of other and unspecified substances180
T66Radiation sickness, unspecified3
T67Effects of heat and light36
T68Hypothermia3
T69Other effects of reduced temperature27
T70Effects of air pressure and water pressure24
T71Asphyxiation117
T73Effects of other deprivation18
T74Adult and child abuse, neglect and other maltreatment, confirmed51
T75Other and unspecified effects of other external causes48
T76Adult and child abuse, neglect and other maltreatment, suspected48
T78Adverse effects, not elsewhere classified81
T79Certain early complications of trauma, not elsewhere classified54
T80Complications following infusion, transfusion and therapeutic injection114
T81Complications of procedures, not elsewhere classified240
T82Complications of cardiac and vascular prosthetic devices, implants and grafts297
T83Complications of genitourinary prosthetic devices, implants and grafts246
T84Complications of internal orthopedic prosthetic devices, implants and grafts357
T85Complications of other internal prosthetic devices, implants and grafts288
T86Complications of transplanted organs and tissue20
T88Other complications of surgical and medical care, not elsewhere classified39
V00Pedestrian conveyance accident168
V01Pedestrian injured in collision with pedal cycle54
V02Pedestrian injured in collision with two- or three-wheeled motor vehicle54
V03Pedestrian injured in collision with car, pick-up truck or van54
V04Pedestrian injured in collision with heavy transport vehicle or bus54
V05Pedestrian injured in collision with railway train or railway vehicle54
V06Pedestrian injured in collision with other nonmotor vehicle54
V09Pedestrian injured in other and unspecified transport accidents27
V10Pedal cycle rider injured in collision with pedestrian or animal21
V11Pedal cycle rider injured in collision with other pedal cycle21
V12Pedal cycle rider injured in collision with two- or three-wheeled motor vehicle21
V13Pedal cycle rider injured in collision with car, pick-up truck or van21
V14Pedal cycle rider injured in collision with heavy transport vehicle or bus21
V15Pedal cycle rider injured in collision with railway train or railway vehicle21
V16Pedal cycle rider injured in collision with other nonmotor vehicle21
V17Pedal cycle rider injured in collision with fixed or stationary object21
V18Pedal cycle rider injured in noncollision transport accident21
V19Pedal cycle rider injured in other and unspecified transport accidents48
V20Motorcycle rider injured in collision with pedestrian or animal42
V21Motorcycle rider injured in collision with pedal cycle42
V22Motorcycle rider injured in collision with two- or three-wheeled motor vehicle42
V23Motorcycle rider injured in collision with car, pick-up truck or van42
V24Motorcycle rider injured in collision with heavy transport vehicle or bus42
V25Motorcycle rider injured in collision with railway train or railway vehicle42
V26Motorcycle rider injured in collision with other nonmotor vehicle42
V27Motorcycle rider injured in collision with fixed or stationary object42
V28Motorcycle rider injured in noncollision transport accident42
V29Motorcycle rider injured in other and unspecified transport accidents96
V30Occupant of three-wheeled motor vehicle injured in collision with pedestrian or animal27
V31Occupant of three-wheeled motor vehicle injured in collision with pedal cycle27
V32Occupant of three-wheeled motor vehicle injured in collision with two- or three-wheeled motor vehicle27
V33Occupant of three-wheeled motor vehicle injured in collision with car, pick-up truck or van27
V34Occupant of three-wheeled motor vehicle injured in collision with heavy transport vehicle or bus27
V35Occupant of three-wheeled motor vehicle injured in collision with railway train or railway vehicle27
V36Occupant of three-wheeled motor vehicle injured in collision with other nonmotor vehicle27
V37Occupant of three-wheeled motor vehicle injured in collision with fixed or stationary object27
V38Occupant of three-wheeled motor vehicle injured in noncollision transport accident27
V39Occupant of three-wheeled motor vehicle injured in other and unspecified transport accidents48
V40Car occupant injured in collision with pedestrian or animal27
V41Car occupant injured in collision with pedal cycle27
V42Car occupant injured in collision with two- or three-wheeled motor vehicle27
V43Car occupant injured in collision with car, pick-up truck or van108
V44Car occupant injured in collision with heavy transport vehicle or bus27
V45Car occupant injured in collision with railway train or railway vehicle27
V46Car occupant injured in collision with other nonmotor vehicle27
V47Car occupant injured in collision with fixed or stationary object27
V48Car occupant injured in noncollision transport accident27
V49Car occupant injured in other and unspecified transport accidents48
V50Occupant of pick-up truck or van injured in collision with pedestrian or animal27
V51Occupant of pick-up truck or van injured in collision with pedal cycle27
V52Occupant of pick-up truck or van injured in collision with two- or three-wheeled motor vehicle27
V53Occupant of pick-up truck or van injured in collision with car, pick-up truck or van27
V54Occupant of pick-up truck or van injured in collision with heavy transport vehicle or bus27
V55Occupant of pick-up truck or van injured in collision with railway train or railway vehicle27
V56Occupant of pick-up truck or van injured in collision with other nonmotor vehicle27
V57Occupant of pick-up truck or van injured in collision with fixed or stationary object27
V58Occupant of pick-up truck or van injured in noncollision transport accident27
V59Occupant of pick-up truck or van injured in other and unspecified transport accidents48
V60Occupant of heavy transport vehicle injured in collision with pedestrian or animal27
V61Occupant of heavy transport vehicle injured in collision with pedal cycle27
V62Occupant of heavy transport vehicle injured in collision with two- or three-wheeled motor vehicle27
V63Occupant of heavy transport vehicle injured in collision with car, pick-up truck or van27
V64Occupant of heavy transport vehicle injured in collision with heavy transport vehicle or bus27
V65Occupant of heavy transport vehicle injured in collision with railway train or railway vehicle27
V66Occupant of heavy transport vehicle injured in collision with other nonmotor vehicle27
V67Occupant of heavy transport vehicle injured in collision with fixed or stationary object27
V68Occupant of heavy transport vehicle injured in noncollision transport accident27
V69Occupant of heavy transport vehicle injured in other and unspecified transport accidents48
V70Bus occupant injured in collision with pedestrian or animal27
V71Bus occupant injured in collision with pedal cycle27
V72Bus occupant injured in collision with two- or three-wheeled motor vehicle27
V73Bus occupant injured in collision with car, pick-up truck or van27
V74Bus occupant injured in collision with heavy transport vehicle or bus27
V75Bus occupant injured in collision with railway train or railway vehicle27
V76Bus occupant injured in collision with other nonmotor vehicle27
V77Bus occupant injured in collision with fixed or stationary object27
V78Bus occupant injured in noncollision transport accident27
V79Bus occupant injured in other and unspecified transport accidents48
V80Animal-rider or occupant of animal-drawn vehicle injured in transport accident93
V81Occupant of railway train or railway vehicle injured in transport accident39
V82Occupant of powered streetcar injured in transport accident30
V83Occupant of special vehicle mainly used on industrial premises injured in transport accident27
V84Occupant of special vehicle mainly used in agriculture injured in transport accident27
V85Occupant of special construction vehicle injured in transport accident27
V86Occupant of special all-terrain or other off-road motor vehicle, injured in transport accident189
V87Traffic accident of specified type but victim's mode of transport unknown30
V88Nontraffic accident of specified type but victim's mode of transport unknown30
V89Motor- or nonmotor-vehicle accident, type of vehicle unspecified15
V90Drowning and submersion due to accident to watercraft144
V91Other injury due to accident to watercraft141
V92Drowning and submersion due to accident on board watercraft, without accident to watercraft84
V93Other injury due to accident on board watercraft, without accident to watercraft168
V94Other and unspecified water transport accidents39
V95Accident to powered aircraft causing injury to occupant111
V96Accident to nonpowered aircraft causing injury to occupant69
V97Other specified air transport accidents39
V98Other specified transport accidents15
V99Unspecified transport accident3
W00Fall due to ice and snow12
W01Fall on same level from slipping, tripping and stumbling24
W03Other fall on same level due to collision with another person3
W04Fall while being carried or supported by other persons3
W05Fall from non-moving wheelchair, nonmotorized scooter and motorized mobility scooter9
W06Fall from bed3
W07Fall from chair3
W08Fall from other furniture3
W09Fall on and from playground equipment12
W10Fall on and from stairs and steps15
W11Fall on and from ladder3
W12Fall on and from scaffolding3
W13Fall from, out of or through building or structure21
W14Fall from tree3
W15Fall from cliff3
W16Fall, jump or diving into water138
W17Other fall from one level to another24
W18Other slipping, tripping and stumbling and falls45
W19Unspecified fall3
W20Struck by thrown, projected or falling object9
W21Striking against or struck by sports equipment72
W22Striking against or struck by other objects33
W23Caught, crushed, jammed or pinched in or between objects9
W24Contact with lifting and transmission devices, not elsewhere classified6
W25Contact with sharp glass3
W26Contact with other sharp objects15
W27Contact with nonpowered hand tool21
W28Contact with powered lawn mower3
W29Contact with other powered hand tools and household machinery18
W30Contact with agricultural machinery21
W31Contact with other and unspecified machinery27
W32Accidental handgun discharge and malfunction6
W33Accidental rifle, shotgun and larger firearm discharge and malfunction30
W34Accidental discharge and malfunction from other and unspecified firearms and guns30
W35Explosion and rupture of boiler3
W36Explosion and rupture of gas cylinder15
W37Explosion and rupture of pressurized tire, pipe or hose6
W38Explosion and rupture of other specified pressurized devices3
W39Discharge of firework3
W40Explosion of other materials12
W42Exposure to noise6
W44Foreign body entering into or through a natural orifice126
W45Foreign body or object entering through skin9
W46Contact with hypodermic needle6
W49Exposure to other inanimate mechanical forces18
W50Accidental hit, strike, kick, twist, bite or scratch by another person15
W51Accidental striking against or bumped into by another person3
W52Crushed, pushed or stepped on by crowd or human stampede3
W53Contact with rodent24
W54Contact with dog9
W55Contact with other mammals63
W56Contact with nonvenomous marine animal63
W57Bitten or stung by nonvenomous insect and other nonvenomous arthropods3
W58Contact with crocodile or alligator24
W59Contact with other nonvenomous reptiles42
W60Contact with nonvenomous plant thorns and spines and sharp leaves3
W61Contact with birds (domestic) (wild)72
W62Contact with nonvenomous amphibians9
W64Exposure to other animate mechanical forces3
W65Accidental drowning and submersion while in bath-tub3
W67Accidental drowning and submersion while in swimming-pool3
W69Accidental drowning and submersion while in natural water3
W73Other specified cause of accidental non-transport drowning and submersion3
W74Unspecified cause of accidental drowning and submersion3
W85Exposure to electric transmission lines3
W86Exposure to other specified electric current9
W88Exposure to ionizing radiation9
W89Exposure to man-made visible and ultraviolet light12
W90Exposure to other nonionizing radiation12
W92Exposure to excessive heat of man-made origin3
W93Exposure to excessive cold of man-made origin18
W94Exposure to high and low air pressure and changes in air pressure30
W99Exposure to other man-made environmental factors3
X00Exposure to uncontrolled fire in building or structure21
X01Exposure to uncontrolled fire, not in building or structure15
X02Exposure to controlled fire in building or structure21
X03Exposure to controlled fire, not in building or structure15
X04Exposure to ignition of highly flammable material3
X05Exposure to ignition or melting of nightwear3
X06Exposure to ignition or melting of other clothing and apparel12
X08Exposure to other specified smoke, fire and flames30
X10Contact with hot drinks, food, fats and cooking oils9
X11Contact with hot tap-water9
X12Contact with other hot fluids3
X13Contact with steam and other hot vapors6
X14Contact with hot air and other hot gases6
X15Contact with hot household appliances15
X16Contact with hot heating appliances, radiators and pipes3
X17Contact with hot engines, machinery and tools3
X18Contact with other hot metals3
X19Contact with other heat and hot substances3
X30Exposure to excessive natural heat3
X31Exposure to excessive natural cold3
X32Exposure to sunlight3
X34Earthquake3
X35Volcanic eruption3
X36Avalanche, landslide and other earth movements6
X37Cataclysmic storm27
X38Flood3
X39Exposure to other forces of nature9
X50Overexertion and strenuous or repetitive movements12
X52Prolonged stay in weightless environment3
X58Exposure to other specified factors3
X71Intentional self-harm by drowning and submersion18
X72Intentional self-harm by handgun discharge3
X73Intentional self-harm by rifle, shotgun and larger firearm discharge15
X74Intentional self-harm by other and unspecified firearm and gun discharge15
X75Intentional self-harm by explosive material3
X76Intentional self-harm by smoke, fire and flames3
X77Intentional self-harm by steam, hot vapors and hot objects18
X78Intentional self-harm by sharp object15
X79Intentional self-harm by blunt object3
X80Intentional self-harm by jumping from a high place3
X81Intentional self-harm by jumping or lying in front of moving object9
X82Intentional self-harm by crashing of motor vehicle12
X83Intentional self-harm by other specified means12
X92Assault by drowning and submersion18
X93Assault by handgun discharge3
X94Assault by rifle, shotgun and larger firearm discharge15
X95Assault by other and unspecified firearm and gun discharge15
X96Assault by explosive material21
X97Assault by smoke, fire and flames3
X98Assault by steam, hot vapors and hot objects18
X99Assault by sharp object15
Y00Assault by blunt object3
Y01Assault by pushing from high place3
Y02Assault by pushing or placing victim in front of moving object9
Y03Assault by crashing of motor vehicle6
Y04Assault by bodily force12
Y08Assault by other specified means15
Y21Drowning and submersion, undetermined intent21
Y22Handgun discharge, undetermined intent3
Y23Rifle, shotgun and larger firearm discharge, undetermined intent18
Y24Other and unspecified firearm discharge, undetermined intent9
Y25Contact with explosive material, undetermined intent3
Y26Exposure to smoke, fire and flames, undetermined intent3
Y27Contact with steam, hot vapors and hot objects, undetermined intent18
Y28Contact with sharp object, undetermined intent15
Y29Contact with blunt object, undetermined intent3
Y30Falling, jumping or pushed from a high place, undetermined intent3
Y31Falling, lying or running before or into moving object, undetermined intent3
Y32Crashing of motor vehicle, undetermined intent3
Y33Other specified events, undetermined intent3
Y35Legal intervention276
Y36Operations of war297
Y37Military operations273
Y38Terrorism96
Z86Personal history of certain other diseases4
Z91Personal risk factors, not elsewhere classified6

The info icon previews the first 7th character codes codes in each block; the block link opens the complete list in the tabular index.

Questions About This Page

How many 7th character codes codes are there in FY 2026?

The FY 2026 dataset contains 51,485 7th character codes codes across 445 code blocks, 51,485 of them billable.

Why does this page list blocks instead of every code?

Because every block already has a complete, filterable code page in the tabular index. This list gets you to the right block fast; the block page carries every code with its notations and details.

Which block has the most 7th character codes codes?

Fracture of lower leg, including ankle (S82) is the largest with 3,096 codes.

Related References

Source: official CMS FY 2026 ICD-10-CM release, effective October 1, 2025 through September 30, 2026.