S42.3
Non-Billable

Fracture of shaft of humerus

Non-Billable / Non-Specific Code

What is Fracture of shaft of humerus?

ICD-10-CM S42.3 is the diagnosis code for Fracture of shaft of humerus. This code falls under the section "Injuries to the shoulder and upper arm" within Chapter 19 — Injury, poisoning and certain other consequences of external causes (S00-T88). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.

💡 Inclusions
â„šī¸ Excludes2

Coding Guidelines for S42.3

✅ This Code Includes

  • Fracture of humerus NOS
  • Fracture of upper arm NOS

â„šī¸ Type 2 Excludes (Code separately if applicable)

The following conditions are not included in S42.3. If the patient has both, code each condition separately:

  • physeal fractures of upper end of humerus (S49.0-)
  • physeal fractures of lower end of humerus (S49.1-)

ICD-10-CM Code Hierarchy

Understanding where S42.3 sits in the ICD-10-CM classification helps ensure proper coding:

Current CodeS42.3 — Fracture of shaft of humerus
Sub-Codes (1918)
A00A01A02A03A04A05A06A07A08A09A15A17A18A19A20A21A22A23A24A25A26A27A28A30A31A32A33A34A35A36A37A38A39A40A41A42A43A44A46A48A49A50A51A52A53A54A55A56A57A58A59A60A63A64A65A66A67A68A69A70A71A74A75A77A78A79A80A81A82A83A84A85A86A87A88A89A90A91A92A93A94A95A96A98A99B00B01B02B03B04B05B06B07B08B09B10B15B16B17B18B19B20B25B26B27B30B33B34B35B36B37B38B39B40B41B42B43B44B45B46B47B48B49B50B51B52B53B54B55B56B57B58B59B60B64B65B66B67B68B69B70B71B72B73B74B75B76B77B78B79B80B81B82B83B85B86B87B88B89B90B91B92B94B95B96B97B99C00C01C02C03C04C05C06C07C08C09C10C11C12C13C14C15C16C17C18C19C20C21C22C23C24C25C26C30C31C32C33C34C37C38C39C40C41C43C44C45C46C47C48C49C4AC50C51C52C53C54C55C56C57C58C60C61C62C63C64C65C66C67C68C69C70C71C72C73C74C75C76C77C78C79C7AC7BC80C81C82C83C84C85C86C88C90C91C92C93C94C95C96D00D01D02D03D04D05D06D07D09D10D11D12D13D14D15D16D17D18D19D20D21D22D23D24D25D26D27D28D29D30D31D32D33D34D35D36D37D38D39D3AD40D41D42D43D44D45D46D47D48D49D50D51D52D53D55D56D57D58D59D60D61D62D63D64D65D66D67D68D69D70D71D72D73D74D75D76D77D78D80D81D82D83D84D86D89E00E01E02E03E04E05E06E07E08E09E10E11E13E15E16E20E21E22E23E24E25E26E27E28E29E30E31E32E34E35E36E40E41E42E43E44E45E46E50E51E52E53E54E55E56E58E59E60E61E63E64E65E66E67E68E70E71E72E73E74E75E76E77E78E79E80E83E84E85E86E87E88E89F01F02F03F04F05F06F07F09F10F11F12F13F14F15F16F17F18F19F20F21F22F23F24F25F28F29F30F31F32F33F34F39F40F41F42F43F44F45F48F50F51F52F53F54F55F59F60F63F64F65F66F68F69F70F71F72F73F78F79F80F81F82F84F88F89F90F91F93F94F95F98F99G00G01G02G03G04G05G06G07G08G09G10G11G12G13G14G20G21G23G24G25G26G30G31G32G35G36G37G40G43G44G45G46G47G50G51G52G53G54G55G56G57G58G59G60G61G62G63G64G65G70G71G72G73G80G81G82G83G89G90G91G92G93G94G95G96G97G98G99H00H01H02H04H05H10H11H15H16H17H18H20H21H22H25H26H27H28H30H31H32H33H34H35H36H40H42H43H44H46H47H49H50H51H52H53H54H55H57H59H60H61H62H65H66H67H68H69H70H71H72H73H74H75H80H81H82H83H90H91H92H93H94H95I00I01I02I05I06I07I08I09I10I11I12I13I15I16I1AI20I21I22I23I24I25I26I27I28I30I31I32I33I34I35I36I37I38I39I40I41I42I43I44I45I46I47I48I49I50I51I52I5AI60I61I62I63I65I66I67I68I69I70I71I72I73I74I75I76I77I78I79I80I81I82I83I85I86I87I88I89I95I96I97I99J00J01J02J03J04J05J06J09J10J11J12J13J14J15J16J17J18J20J21J22J30J31J32J33J34J35J36J37J38J39J40J41J42J43J44J45J47J4AJ60J61J62J63J64J65J66J67J68J69J70J80J81J82J84J85J86J90J91J92J93J94J95J96J98J99K00K01K02K03K04K05K06K08K09K11K12K13K14K20K21K22K23K25K26K27K28K29K30K31K35K36K37K38K40K41K42K43K44K45K46K50K51K52K55K56K57K58K59K60K61K62K63K64K65K66K67K68K70K71K72K73K74K75K76K77K80K81K82K83K85K86K87K90K91K92K94K95L00L01L02L03L04L05L08L10L11L12L13L14L20L21L22L23L24L25L26L27L28L29L30L40L41L42L43L44L45L49L50L51L52L53L54L55L56L57L58L59L60L62L63L64L65L66L67L68L70L71L72L73L74L75L76L80L81L82L83L84L85L86L87L88L89L90L91L92L93L94L95L97L98L99M00M01M02M04M05M06M07M08M10M11M12M13M14M15M16M17M18M19M1AM20M21M22M23M24M25M26M27M30M31M32M33M34M35M36M40M41M42M43M45M46M47M48M49M50M51M53M54M60M61M62M63M65M66M67M70M71M72M75M76M77M79M80M81M83M84M85M86M87M88M89M90M91M92M93M94M95M96M97M99N00N01N02N03N04N05N06N07N08N10N11N12N13N14N15N16N17N18N19N20N21N22N23N25N26N27N28N29N30N31N32N33N34N35N36N37N39N40N41N42N43N44N45N46N47N48N49N50N51N52N53N60N61N62N63N64N65N70N71N72N73N74N75N76N77N80N81N82N83N84N85N86N87N88N89N90N91N92N93N94N95N96N97N98N99O00O01O02O03O04O07O08O09O10O11O12O13O14O15O16O20O21O22O23O24O25O26O28O29O30O31O32O33O34O35O36O40O41O42O43O44O45O46O47O48O60O61O62O63O64O65O66O67O68O69O70O71O72O73O74O75O76O77O80O82O85O86O87O88O89O90O91O92O94O98O99O9AP00P01P02P03P04P05P07P08P09P10P11P12P13P14P15P19P22P23P24P25P26P27P28P29P35P36P37P38P39P50P51P52P53P54P55P56P57P58P59P60P61P70P71P72P74P76P77P78P80P81P83P84P90P91P92P93P94P95P96Q00Q01Q02Q03Q04Q05Q06Q07Q10Q11Q12Q13Q14Q15Q16Q17Q18Q20Q21Q22Q23Q24Q25Q26Q27Q28Q30Q31Q32Q33Q34Q35Q36Q37Q38Q39Q40Q41Q42Q43Q44Q45Q50Q51Q52Q53Q54Q55Q56Q60Q61Q62Q63Q64Q65Q66Q67Q68Q69Q70Q71Q72Q73Q74Q75Q76Q77Q78Q79Q80Q81Q82Q83Q84Q85Q86Q87Q89Q90Q91Q92Q93Q95Q96Q97Q98Q99QA0R00R01R03R04R05R06R07R09R10R11R12R13R14R15R16R17R18R19R20R21R22R23R25R26R27R29R30R31R32R33R34R35R36R37R39R40R41R42R43R44R45R46R47R48R49R50R51R52R53R54R55R56R57R58R59R60R61R62R63R64R65R68R69R70R71R73R74R75R76R77R78R79R80R81R82R83R84R85R86R87R88R89R90R91R92R93R94R97R99S00S01S02S03S04S05S06S07S08S09S10S11S12S13S14S15S16S17S19S20S21S22S23S24S25S26S27S28S29S30S31S32S33S34S35S36S37S38S39S40S41S42S43S44S45S46S47S48S49S50S51S52S53S54S55S56S57S58S59S60S61S62S63S64S65S66S67S68S69S70S71S72S73S74S75S76S77S78S79S80S81S82S83S84S85S86S87S88S89S90S91S92S93S94S95S96S97S98S99T07T14T15T16T17T18T19T20T21T22T23T24T25T26T27T28T30T31T32T33T34T36T37T38T39T40T41T42T43T44T45T46T47T48T49T50T51T52T53T54T55T56T57T58T59T60T61T62T63T64T65T66T67T68T69T70T71T73T74T75T76T78T79T80T81T82T83T84T85T86T87T88U07U09V00V01V02V03V04V05V06V09V10V11V12V13V14V15V16V17V18V19V20V21V22V23V24V25V26V27V28V29V30V31V32V33V34V35V36V37V38V39V40V41V42V43V44V45V46V47V48V49V50V51V52V53V54V55V56V57V58V59V60V61V62V63V64V65V66V67V68V69V70V71V72V73V74V75V76V77V78V79V80V81V82V83V84V85V86V87V88V89V90V91V92V93V94V95V96V97V98V99W00W01W03W04W05W06W07W08W09W10W11W12W13W14W15W16W17W18W19W20W21W22W23W24W25W26W27W28W29W30W31W32W33W34W35W36W37W38W39W40W42W44W45W46W49W50W51W52W53W54W55W56W57W58W59W60W61W62W64W65W67W69W73W74W85W86W88W89W90W92W93W94W99X00X01X02X03X04X05X06X08X10X11X12X13X14X15X16X17X18X19X30X31X32X34X35X36X37X38X39X50X52X58X71X72X73X74X75X76X77X78X79X80X81X82X83X92X93X94X95X96X97X98X99Y00Y01Y02Y03Y04Y07Y08Y09Y21Y22Y23Y24Y25Y26Y27Y28Y29Y30Y31Y32Y33Y35Y36Y37Y38Y62Y63Y64Y65Y66Y69Y70Y71Y72Y73Y74Y75Y76Y77Y78Y79Y80Y81Y82Y83Y84Y90Y92Y93Y95Y99Z00Z01Z02Z03Z04Z05Z08Z09Z11Z12Z13Z14Z15Z16Z17Z18Z19Z20Z21Z22Z23Z28Z29Z30Z31Z32Z33Z34Z36Z37Z38Z39Z3AZ40Z41Z42Z43Z44Z45Z46Z47Z48Z49Z51Z52Z53Z55Z56Z57Z58Z59Z60Z62Z63Z64Z65Z66Z67Z68Z69Z70Z71Z72Z73Z74Z75Z76Z77Z78Z79Z80Z81Z82Z83Z84Z85Z86Z87Z88Z89Z90Z91Z92Z93Z94Z95Z96Z97Z98Z99
Sub-Codes 8 entries
S42.30Unspecified fracture of shaft of humerusNon-BillableS42.301Unspecified fracture of shaft of humerus, right armBillableS42.302Unspecified fracture of shaft of humerus, left armBillableS42.309Unspecified fracture of shaft of humerus, unspecified armBillableS42.31Greenstick fracture of shaft of humerusNon-BillableS42.311Greenstick fracture of shaft of humerus, right armBillableS42.312Greenstick fracture of shaft of humerus, left armBillableS42.319Greenstick fracture of shaft of humerus, unspecified armBillableS42.32Transverse fracture of shaft of humerusNon-BillableS42.321Displaced transverse fracture of shaft of humerus, right armBillableS42.322Displaced transverse fracture of shaft of humerus, left armBillableS42.323Displaced transverse fracture of shaft of humerus, unspecified armBillableS42.324Nondisplaced transverse fracture of shaft of humerus, right armBillableS42.325Nondisplaced transverse fracture of shaft of humerus, left armBillableS42.326Nondisplaced transverse fracture of shaft of humerus, unspecified armBillableS42.33Oblique fracture of shaft of humerusNon-BillableS42.331Displaced oblique fracture of shaft of humerus, right armBillableS42.332Displaced oblique fracture of shaft of humerus, left armBillableS42.333Displaced oblique fracture of shaft of humerus, unspecified armBillableS42.334Nondisplaced oblique fracture of shaft of humerus, right armBillableS42.335Nondisplaced oblique fracture of shaft of humerus, left armBillableS42.336Nondisplaced oblique fracture of shaft of humerus, unspecified armBillableS42.34Spiral fracture of shaft of humerusNon-BillableS42.341Displaced spiral fracture of shaft of humerus, right armBillableS42.342Displaced spiral fracture of shaft of humerus, left armBillableS42.343Displaced spiral fracture of shaft of humerus, unspecified armBillableS42.344Nondisplaced spiral fracture of shaft of humerus, right armBillableS42.345Nondisplaced spiral fracture of shaft of humerus, left armBillableS42.346Nondisplaced spiral fracture of shaft of humerus, unspecified armBillableS42.35Comminuted fracture of shaft of humerusNon-BillableS42.351Displaced comminuted fracture of shaft of humerus, right armBillableS42.352Displaced comminuted fracture of shaft of humerus, left armBillableS42.353Displaced comminuted fracture of shaft of humerus, unspecified armBillableS42.354Nondisplaced comminuted fracture of shaft of humerus, right armBillableS42.355Nondisplaced comminuted fracture of shaft of humerus, left armBillableS42.356Nondisplaced comminuted fracture of shaft of humerus, unspecified armBillableS42.36Segmental fracture of shaft of humerusNon-BillableS42.361Displaced segmental fracture of shaft of humerus, right armBillableS42.362Displaced segmental fracture of shaft of humerus, left armBillableS42.363Displaced segmental fracture of shaft of humerus, unspecified armBillableS42.364Nondisplaced segmental fracture of shaft of humerus, right armBillableS42.365Nondisplaced segmental fracture of shaft of humerus, left armBillableS42.366Nondisplaced segmental fracture of shaft of humerus, unspecified armBillableS42.39Other fracture of shaft of humerusNon-BillableS42.391Other fracture of shaft of right humerusBillableS42.392Other fracture of shaft of left humerusBillableS42.399Other fracture of shaft of unspecified humerusBillable
Related Codes

Frequently Asked Questions

Is S42.3 a billable ICD-10-CM code?

No, S42.3 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.

What does S42.3 mean?

S42.3 is the ICD-10-CM diagnosis code for "Fracture of shaft of humerus". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.

What is the parent code of S42.3?

The parent code of S42.3 is S42 ("Fracture of shoulder and upper arm"). S42.3 provides a more specific classification within this category.

What section is S42.3 in?

S42.3 is located in Section S40-S49 — "Injuries to the shoulder and upper arm" within Chapter 19 of the ICD-10-CM Tabular List.

What are the sub-codes of S42.3?

S42.3 has 1918 sub-code(s) that provide more specific detail: A00, A01, A02, A03, A04 and more.

When should I use S42.3?

Use S42.3 when the patients documented diagnosis matches "Fracture of shaft of humerus" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.

People Also Ask

What is the ICD-10 code for Fracture of shaft of humerus?

The ICD-10-CM code for Fracture of shaft of humerus is S42.3.

Can S42.3 be used for primary diagnosis?

No, S42.3 is non-billable. Use a more specific sub-code for primary diagnosis billing.

What chapter is S42.3 in?

S42.3 is in Chapter 19 of the ICD-10-CM Tabular List.

Is S42.3 valid for 2026?

Yes, S42.3 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.

See Also

← PreviousS42.296Other nondisplaced fracture of upper end of unspecified humerusNext →S42.30Unspecified fracture of shaft of humerus
Code Details
S42.3
Fracture of shaft of humerus
Non-Billable / Non-Specific Code
19 — Injury, poisoning and certain other consequences of external causes (S00-T88)
S40-S49 — Injuries to the shoulder and upper arm
2026 ICD-10-CM