Other and unspecified effects of other external causes
In Other and unspecified effects of external causes (T66-T78), chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes
48 billable codes under T75: 1 is a CC; none map to an HCC.A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment.
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Instructional notes
Also applies, from Other and unspecified effects of external causes (T66-T78)
These notes sit on T66-T78 and apply to every code under it, including T75.
Code also: add a code for this too, order depends on the encounter
- if applicable, place of occurrence, such as:
- highway rest stop (Y92.523)
- school (private) (public) (state) as the place of occurrence of the external cause (Y92.21-)
- service areas as the place of occurrence of the external cause (Y92.52-)
- single-family non-institutional (private) house as the place of occurrence of the external cause (Y92.01-)
- transport vehicle as the place of occurrence of the external cause (Y92.81-)
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Covers 7th character use and coding of injuries, fractures, burns, drug and toxic effects, abuse and neglect, and complications of care (S00-T88).
- Application of 7th Characters in Chapter 19 (page 77)
- Coding of Injuries (page 78)
- Coding of Traumatic Fractures (page 79)
- Coding of Burns and Corrosions (page 80)
- Adverse Effects, Poisoning, Underdosing and Toxic Effects (page 82)
- Adult and child abuse, neglect and other maltreatment (page 85)
- Complications of care (page 85)
All codes under T75
T75 can't be used on a claim. Pick a billable code below; grey headings group them.
- T75.0Effects of lightning
- T75.00Unspecified effects of lightning
- T75.00XAUnspecified effects of lightning, initial encounter
- T75.00XDUnspecified effects of lightning, subsequent encounter
- T75.00XSUnspecified effects of lightning, sequela
- T75.01Shock due to being struck by lightning
- T75.01XAShock due to being struck by lightning, initial encounter
- T75.01XDShock due to being struck by lightning, subsequent encounter
- T75.01XSShock due to being struck by lightning, sequela
- T75.09Other effects of lightning
- T75.09XAOther effects of lightning, initial encounter
- T75.09XDOther effects of lightning, subsequent encounter
- T75.09XSOther effects of lightning, sequela
- T75.1Unspecified effects of drowning and nonfatal submersion
- T75.1XXAUnspecified effects of drowning and nonfatal submersion, initial encounter
- T75.1XXDUnspecified effects of drowning and nonfatal submersion, subsequent encounter
- T75.1XXSUnspecified effects of drowning and nonfatal submersion, sequela
- T75.2Effects of vibration
- T75.20Unspecified effects of vibration
- T75.20XAUnspecified effects of vibration, initial encounter
- T75.20XDUnspecified effects of vibration, subsequent encounter
- T75.20XSUnspecified effects of vibration, sequela
- T75.21Pneumatic hammer syndrome
- T75.21XAPneumatic hammer syndrome, initial encounter
- T75.21XDPneumatic hammer syndrome, subsequent encounter
- T75.21XSPneumatic hammer syndrome, sequela
- T75.22Traumatic vasospastic syndrome
- T75.22XATraumatic vasospastic syndrome, initial encounter
- T75.22XDTraumatic vasospastic syndrome, subsequent encounter
- T75.22XSTraumatic vasospastic syndrome, sequela
- T75.23Vertigo from infrasound
- T75.23XAVertigo from infrasound, initial encounter
- T75.23XDVertigo from infrasound, subsequent encounter
- T75.23XSVertigo from infrasound, sequela
- T75.29Other effects of vibration
- T75.29XAOther effects of vibration, initial encounter
- T75.29XDOther effects of vibration, subsequent encounter
- T75.29XSOther effects of vibration, sequela
- T75.3Motion sickness
- T75.3XXAMotion sickness, initial encounter
- T75.3XXDMotion sickness, subsequent encounter
- T75.3XXSMotion sickness, sequela
- T75.4Electrocution
- T75.4XXAElectrocution, initial encounter
- T75.4XXDElectrocution, subsequent encounter
- T75.4XXSElectrocution, sequela
- T75.8Other specified effects of external causes
- T75.81Effects of abnormal gravitation [G] forces
- T75.81XAEffects of abnormal gravitation [G] forces, initial encounter
- T75.81XDEffects of abnormal gravitation [G] forces, subsequent encounter
- T75.81XSEffects of abnormal gravitation [G] forces, sequela
- T75.82Effects of weightlessness
- T75.82XAEffects of weightlessness, initial encounter
- T75.82XDEffects of weightlessness, subsequent encounter
- T75.82XSEffects of weightlessness, sequela
- T75.83Effects of war theater
- T75.830Gulf war illness
- T75.830AGulf war illness, initial encounter
- T75.830DGulf war illness, subsequent encounter
- T75.830SGulf war illness, sequela
- T75.838Effects of other war theater
- T75.838AEffects of other war theater, initial encounter
- T75.838DEffects of other war theater, subsequent encounter
- T75.838SEffects of other war theater, sequela
- T75.89Other specified effects of external causes
- T75.89XAOther specified effects of external causes, initial encounter
- T75.89XDOther specified effects of external causes, subsequent encounter
- T75.89XSOther specified effects of external causes, sequela
T75 MS-DRGs
As the principal diagnosis, the billable codes under T75 group to MS-DRG 922, 923, 949, 950, or 149 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
- DRG 922 Other Injury, Poisoning and Toxic Effect Diagnoses with MCC (31 of 48 codes)
- DRG 923 Other Injury, Poisoning and Toxic Effect Diagnoses without MCC (31 of 48 codes)
- DRG 949 Aftercare with CC/MCC (16 of 48 codes)
- DRG 950 Aftercare without CC/MCC (16 of 48 codes)
- DRG 149 Dysequilibrium (1 of 48 codes)
Code history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.
