S20.3
Non-Billable

Other and unspecified superficial injuries of front wall of thorax

Non-Billable / Non-Specific Code

What is Other and unspecified superficial injuries of front wall of thorax?

ICD-10-CM S20.3 is the diagnosis code for Other and unspecified superficial injuries of front wall of thorax. This code falls under the section "Injuries to the thorax" 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.

Coding Guidelines for S20.3

Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.

ICD-10-CM Code Hierarchy

Understanding where S20.3 sits in the ICD-10-CM classification helps ensure proper coding:

Current CodeS20.3 — Other and unspecified superficial injuries of front wall of thorax
Sub-Codes (1918)
A00A01A02A03A04A05A06A07A08A09A15A17A18A19A20A21A22A23A24A25A26A27A28A30A31A32A33A34A35A36A37A38A39A40A41A42A43A44A46A48A49A50A51A52A53A54A55A56A57A58A59A60A63A64A65A66A67A68A69A70A71A74A75A77A78A79A80A81A82A83A84A85A86A87A88A89A90A91A92A93A94A95A96A98A99B00B01B02B03B04B05B06B07B08B09B10B15B16B17B18B19B20B25B26B27B30B33B34B35B36B37B38B39B40B41B42B43B44B45B46B47B48B49B50B51B52B53B54B55B56B57B58B59B60B64B65B66B67B68B69B70B71B72B73B74B75B76B77B78B79B80B81B82B83B85B86B87B88B89B90B91B92B94B95B96B97B99C00C01C02C03C04C05C06C07C08C09C10C11C12C13C14C15C16C17C18C19C20C21C22C23C24C25C26C30C31C32C33C34C37C38C39C40C41C43C44C45C46C47C48C49C4AC50C51C52C53C54C55C56C57C58C60C61C62C63C64C65C66C67C68C69C70C71C72C73C74C75C76C77C78C79C7AC7BC80C81C82C83C84C85C86C88C90C91C92C93C94C95C96D00D01D02D03D04D05D06D07D09D10D11D12D13D14D15D16D17D18D19D20D21D22D23D24D25D26D27D28D29D30D31D32D33D34D35D36D37D38D39D3AD40D41D42D43D44D45D46D47D48D49D50D51D52D53D55D56D57D58D59D60D61D62D63D64D65D66D67D68D69D70D71D72D73D74D75D76D77D78D80D81D82D83D84D86D89E00E01E02E03E04E05E06E07E08E09E10E11E13E15E16E20E21E22E23E24E25E26E27E28E29E30E31E32E34E35E36E40E41E42E43E44E45E46E50E51E52E53E54E55E56E58E59E60E61E63E64E65E66E67E68E70E71E72E73E74E75E76E77E78E79E80E83E84E85E86E87E88E89F01F02F03F04F05F06F07F09F10F11F12F13F14F15F16F17F18F19F20F21F22F23F24F25F28F29F30F31F32F33F34F39F40F41F42F43F44F45F48F50F51F52F53F54F55F59F60F63F64F65F66F68F69F70F71F72F73F78F79F80F81F82F84F88F89F90F91F93F94F95F98F99G00G01G02G03G04G05G06G07G08G09G10G11G12G13G14G20G21G23G24G25G26G30G31G32G35G36G37G40G43G44G45G46G47G50G51G52G53G54G55G56G57G58G59G60G61G62G63G64G65G70G71G72G73G80G81G82G83G89G90G91G92G93G94G95G96G97G98G99H00H01H02H04H05H10H11H15H16H17H18H20H21H22H25H26H27H28H30H31H32H33H34H35H36H40H42H43H44H46H47H49H50H51H52H53H54H55H57H59H60H61H62H65H66H67H68H69H70H71H72H73H74H75H80H81H82H83H90H91H92H93H94H95I00I01I02I05I06I07I08I09I10I11I12I13I15I16I1AI20I21I22I23I24I25I26I27I28I30I31I32I33I34I35I36I37I38I39I40I41I42I43I44I45I46I47I48I49I50I51I52I5AI60I61I62I63I65I66I67I68I69I70I71I72I73I74I75I76I77I78I79I80I81I82I83I85I86I87I88I89I95I96I97I99J00J01J02J03J04J05J06J09J10J11J12J13J14J15J16J17J18J20J21J22J30J31J32J33J34J35J36J37J38J39J40J41J42J43J44J45J47J4AJ60J61J62J63J64J65J66J67J68J69J70J80J81J82J84J85J86J90J91J92J93J94J95J96J98J99K00K01K02K03K04K05K06K08K09K11K12K13K14K20K21K22K23K25K26K27K28K29K30K31K35K36K37K38K40K41K42K43K44K45K46K50K51K52K55K56K57K58K59K60K61K62K63K64K65K66K67K68K70K71K72K73K74K75K76K77K80K81K82K83K85K86K87K90K91K92K94K95L00L01L02L03L04L05L08L10L11L12L13L14L20L21L22L23L24L25L26L27L28L29L30L40L41L42L43L44L45L49L50L51L52L53L54L55L56L57L58L59L60L62L63L64L65L66L67L68L70L71L72L73L74L75L76L80L81L82L83L84L85L86L87L88L89L90L91L92L93L94L95L97L98L99M00M01M02M04M05M06M07M08M10M11M12M13M14M15M16M17M18M19M1AM20M21M22M23M24M25M26M27M30M31M32M33M34M35M36M40M41M42M43M45M46M47M48M49M50M51M53M54M60M61M62M63M65M66M67M70M71M72M75M76M77M79M80M81M83M84M85M86M87M88M89M90M91M92M93M94M95M96M97M99N00N01N02N03N04N05N06N07N08N10N11N12N13N14N15N16N17N18N19N20N21N22N23N25N26N27N28N29N30N31N32N33N34N35N36N37N39N40N41N42N43N44N45N46N47N48N49N50N51N52N53N60N61N62N63N64N65N70N71N72N73N74N75N76N77N80N81N82N83N84N85N86N87N88N89N90N91N92N93N94N95N96N97N98N99O00O01O02O03O04O07O08O09O10O11O12O13O14O15O16O20O21O22O23O24O25O26O28O29O30O31O32O33O34O35O36O40O41O42O43O44O45O46O47O48O60O61O62O63O64O65O66O67O68O69O70O71O72O73O74O75O76O77O80O82O85O86O87O88O89O90O91O92O94O98O99O9AP00P01P02P03P04P05P07P08P09P10P11P12P13P14P15P19P22P23P24P25P26P27P28P29P35P36P37P38P39P50P51P52P53P54P55P56P57P58P59P60P61P70P71P72P74P76P77P78P80P81P83P84P90P91P92P93P94P95P96Q00Q01Q02Q03Q04Q05Q06Q07Q10Q11Q12Q13Q14Q15Q16Q17Q18Q20Q21Q22Q23Q24Q25Q26Q27Q28Q30Q31Q32Q33Q34Q35Q36Q37Q38Q39Q40Q41Q42Q43Q44Q45Q50Q51Q52Q53Q54Q55Q56Q60Q61Q62Q63Q64Q65Q66Q67Q68Q69Q70Q71Q72Q73Q74Q75Q76Q77Q78Q79Q80Q81Q82Q83Q84Q85Q86Q87Q89Q90Q91Q92Q93Q95Q96Q97Q98Q99QA0R00R01R03R04R05R06R07R09R10R11R12R13R14R15R16R17R18R19R20R21R22R23R25R26R27R29R30R31R32R33R34R35R36R37R39R40R41R42R43R44R45R46R47R48R49R50R51R52R53R54R55R56R57R58R59R60R61R62R63R64R65R68R69R70R71R73R74R75R76R77R78R79R80R81R82R83R84R85R86R87R88R89R90R91R92R93R94R97R99S00S01S02S03S04S05S06S07S08S09S10S11S12S13S14S15S16S17S19S20S21S22S23S24S25S26S27S28S29S30S31S32S33S34S35S36S37S38S39S40S41S42S43S44S45S46S47S48S49S50S51S52S53S54S55S56S57S58S59S60S61S62S63S64S65S66S67S68S69S70S71S72S73S74S75S76S77S78S79S80S81S82S83S84S85S86S87S88S89S90S91S92S93S94S95S96S97S98S99T07T14T15T16T17T18T19T20T21T22T23T24T25T26T27T28T30T31T32T33T34T36T37T38T39T40T41T42T43T44T45T46T47T48T49T50T51T52T53T54T55T56T57T58T59T60T61T62T63T64T65T66T67T68T69T70T71T73T74T75T76T78T79T80T81T82T83T84T85T86T87T88U07U09V00V01V02V03V04V05V06V09V10V11V12V13V14V15V16V17V18V19V20V21V22V23V24V25V26V27V28V29V30V31V32V33V34V35V36V37V38V39V40V41V42V43V44V45V46V47V48V49V50V51V52V53V54V55V56V57V58V59V60V61V62V63V64V65V66V67V68V69V70V71V72V73V74V75V76V77V78V79V80V81V82V83V84V85V86V87V88V89V90V91V92V93V94V95V96V97V98V99W00W01W03W04W05W06W07W08W09W10W11W12W13W1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Sub-Codes 7 entries
S20.30Unspecified superficial injuries of front wall of thoraxNon-BillableS20.301Unspecified superficial injuries of right front wall of thoraxBillableS20.302Unspecified superficial injuries of left front wall of thoraxBillableS20.303Unspecified superficial injuries of bilateral front wall of thoraxBillableS20.304Unspecified superficial injuries of middle front wall of thoraxBillableS20.309Unspecified superficial injuries of unspecified front wall of thoraxBillableS20.31Abrasion of front wall of thoraxNon-BillableS20.311Abrasion of right front wall of thoraxBillableS20.312Abrasion of left front wall of thoraxBillableS20.313Abrasion of bilateral front wall of thoraxBillableS20.314Abrasion of middle front wall of thoraxBillableS20.319Abrasion of unspecified front wall of thoraxBillableS20.32Blister (nonthermal) of front wall of thoraxNon-BillableS20.321Blister (nonthermal) of right front wall of thoraxBillableS20.322Blister (nonthermal) of left front wall of thoraxBillableS20.323Blister (nonthermal) of bilateral front wall of thoraxBillableS20.324Blister (nonthermal) of middle front wall of thoraxBillableS20.329Blister (nonthermal) of unspecified front wall of thoraxBillableS20.34External constriction of front wall of thoraxNon-BillableS20.341External constriction of right front wall of thoraxBillableS20.342External constriction of left front wall of thoraxBillableS20.343External constriction of bilateral front wall of thoraxBillableS20.344External constriction of middle front wall of thoraxBillableS20.349External constriction of unspecified front wall of thoraxBillableS20.35Superficial foreign body of front wall of thoraxNon-BillableS20.351Superficial foreign body of right front wall of thoraxBillableS20.352Superficial foreign body of left front wall of thoraxBillableS20.353Superficial foreign body of bilateral front wall of thoraxBillableS20.354Superficial foreign body of middle front wall of thoraxBillableS20.359Superficial foreign body of unspecified front wall of thoraxBillableS20.36Insect bite (nonvenomous) of front wall of thoraxNon-BillableS20.361Insect bite (nonvenomous) of right front wall of thoraxBillableS20.362Insect bite (nonvenomous) of left front wall of thoraxBillableS20.363Insect bite (nonvenomous) of bilateral front wall of thoraxBillableS20.364Insect bite (nonvenomous) of middle front wall of thoraxBillableS20.369Insect bite (nonvenomous) of unspecified front wall of thoraxBillableS20.37Other superficial bite of front wall of thoraxNon-BillableS20.371Other superficial bite of right front wall of thoraxBillableS20.372Other superficial bite of left front wall of thoraxBillableS20.373Other superficial bite of bilateral front wall of thoraxBillableS20.374Other superficial bite of middle front wall of thoraxBillableS20.379Other superficial bite of unspecified front wall of thoraxBillable
Related Codes

Frequently Asked Questions

Is S20.3 a billable ICD-10-CM code?

No, S20.3 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.

What does S20.3 mean?

S20.3 is the ICD-10-CM diagnosis code for "Other and unspecified superficial injuries of front wall of thorax". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.

What is the parent code of S20.3?

The parent code of S20.3 is S20 ("Superficial injury of thorax"). S20.3 provides a more specific classification within this category.

What section is S20.3 in?

S20.3 is located in Section S20-S29 — "Injuries to the thorax" within Chapter 19 of the ICD-10-CM Tabular List.

What are the sub-codes of S20.3?

S20.3 has 1918 sub-code(s) that provide more specific detail: A00, A01, A02, A03, A04 and more.

When should I use S20.3?

Use S20.3 when the patients documented diagnosis matches "Other and unspecified superficial injuries of front wall of thorax" 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 Other and unspecified superficial injuries of front wall of thorax?

The ICD-10-CM code for Other and unspecified superficial injuries of front wall of thorax is S20.3.

Can S20.3 be used for primary diagnosis?

No, S20.3 is non-billable. Use a more specific sub-code for primary diagnosis billing.

What chapter is S20.3 in?

S20.3 is in Chapter 19 of the ICD-10-CM Tabular List.

Is S20.3 valid for 2026?

Yes, S20.3 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.

See Also

← PreviousS20.229Contusion of unspecified back wall of thoraxNext →S20.30Unspecified superficial injuries of front wall of thorax
Code Details
S20.3
Other and unspecified superficial injuries of front wall of thorax
Non-Billable / Non-Specific Code
19 — Injury, poisoning and certain other consequences of external causes (S00-T88)
S20-S29 — Injuries to the thorax
2026 ICD-10-CM