T34Not billable, use a more specific code below
Frostbite with tissue necrosis
In Frostbite (T33-T34), chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes
111 billable codes under T34: 37 are 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
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 T34
T34 can't be used on a claim. Pick a billable code below; grey headings group them.
- T34.0Frostbite with tissue necrosis of head
- T34.01Frostbite with tissue necrosis of ear
- T34.011Frostbite with tissue necrosis of right ear
- T34.011AFrostbite with tissue necrosis of right ear, initial encounter
- T34.011DFrostbite with tissue necrosis of right ear, subsequent encounter
- T34.011SFrostbite with tissue necrosis of right ear, sequela
- T34.012Frostbite with tissue necrosis of left ear
- T34.012AFrostbite with tissue necrosis of left ear, initial encounter
- T34.012DFrostbite with tissue necrosis of left ear, subsequent encounter
- T34.012SFrostbite with tissue necrosis of left ear, sequela
- T34.019Frostbite with tissue necrosis of unspecified ear
- T34.019AFrostbite with tissue necrosis of unspecified ear, initial encounter
- T34.019DFrostbite with tissue necrosis of unspecified ear, subsequent encounter
- T34.019SFrostbite with tissue necrosis of unspecified ear, sequela
- T34.02Frostbite with tissue necrosis of nose
- T34.02XAFrostbite with tissue necrosis of nose, initial encounter
- T34.02XDFrostbite with tissue necrosis of nose, subsequent encounter
- T34.02XSFrostbite with tissue necrosis of nose, sequela
- T34.09Frostbite with tissue necrosis of other part of head
- T34.09XAFrostbite with tissue necrosis of other part of head, initial encounter
- T34.09XDFrostbite with tissue necrosis of other part of head, subsequent encounter
- T34.09XSFrostbite with tissue necrosis of other part of head, sequela
- T34.1Frostbite with tissue necrosis of neck
- T34.1XXAFrostbite with tissue necrosis of neck, initial encounter
- T34.1XXDFrostbite with tissue necrosis of neck, subsequent encounter
- T34.1XXSFrostbite with tissue necrosis of neck, sequela
- T34.2Frostbite with tissue necrosis of thorax
- T34.2XXAFrostbite with tissue necrosis of thorax, initial encounter
- T34.2XXDFrostbite with tissue necrosis of thorax, subsequent encounter
- T34.2XXSFrostbite with tissue necrosis of thorax, sequela
- T34.3Frostbite with tissue necrosis of abdominal wall, lower back and pelvis
- T34.3XXAFrostbite with tissue necrosis of abdominal wall, lower back and pelvis, initial encounter
- T34.3XXDFrostbite with tissue necrosis of abdominal wall, lower back and pelvis, subsequent encounter
- T34.3XXSFrostbite with tissue necrosis of abdominal wall, lower back and pelvis, sequela
- T34.4Frostbite with tissue necrosis of arm
- T34.40Frostbite with tissue necrosis of unspecified arm
- T34.40XAFrostbite with tissue necrosis of unspecified arm, initial encounter
- T34.40XDFrostbite with tissue necrosis of unspecified arm, subsequent encounter
- T34.40XSFrostbite with tissue necrosis of unspecified arm, sequela
- T34.41Frostbite with tissue necrosis of right arm
- T34.41XAFrostbite with tissue necrosis of right arm, initial encounter
- T34.41XDFrostbite with tissue necrosis of right arm, subsequent encounter
- T34.41XSFrostbite with tissue necrosis of right arm, sequela
- T34.42Frostbite with tissue necrosis of left arm
- T34.42XAFrostbite with tissue necrosis of left arm, initial encounter
- T34.42XDFrostbite with tissue necrosis of left arm, subsequent encounter
- T34.42XSFrostbite with tissue necrosis of left arm, sequela
- T34.5Frostbite with tissue necrosis of wrist, hand, and finger(s)
- T34.51Frostbite with tissue necrosis of wrist
- T34.511Frostbite with tissue necrosis of right wrist
- T34.511AFrostbite with tissue necrosis of right wrist, initial encounter
- T34.511DFrostbite with tissue necrosis of right wrist, subsequent encounter
- T34.511SFrostbite with tissue necrosis of right wrist, sequela
- T34.512Frostbite with tissue necrosis of left wrist
- T34.512AFrostbite with tissue necrosis of left wrist, initial encounter
- T34.512DFrostbite with tissue necrosis of left wrist, subsequent encounter
- T34.512SFrostbite with tissue necrosis of left wrist, sequela
- T34.519Frostbite with tissue necrosis of unspecified wrist
- T34.519AFrostbite with tissue necrosis of unspecified wrist, initial encounter
- T34.519DFrostbite with tissue necrosis of unspecified wrist, subsequent encounter
- T34.519SFrostbite with tissue necrosis of unspecified wrist, sequela
- T34.52Frostbite with tissue necrosis of hand
- T34.521Frostbite with tissue necrosis of right hand
- T34.521AFrostbite with tissue necrosis of right hand, initial encounter
- T34.521DFrostbite with tissue necrosis of right hand, subsequent encounter
- T34.521SFrostbite with tissue necrosis of right hand, sequela
- T34.522Frostbite with tissue necrosis of left hand
- T34.522AFrostbite with tissue necrosis of left hand, initial encounter
- T34.522DFrostbite with tissue necrosis of left hand, subsequent encounter
- T34.522SFrostbite with tissue necrosis of left hand, sequela
- T34.529Frostbite with tissue necrosis of unspecified hand
- T34.529AFrostbite with tissue necrosis of unspecified hand, initial encounter
- T34.529DFrostbite with tissue necrosis of unspecified hand, subsequent encounter
- T34.529SFrostbite with tissue necrosis of unspecified hand, sequela
- T34.53Frostbite with tissue necrosis of finger(s)
- T34.531Frostbite with tissue necrosis of right finger(s)
- T34.531AFrostbite with tissue necrosis of right finger(s), initial encounter
- T34.531DFrostbite with tissue necrosis of right finger(s), subsequent encounter
- T34.531SFrostbite with tissue necrosis of right finger(s), sequela
- T34.532Frostbite with tissue necrosis of left finger(s)
- T34.532AFrostbite with tissue necrosis of left finger(s), initial encounter
- T34.532DFrostbite with tissue necrosis of left finger(s), subsequent encounter
- T34.532SFrostbite with tissue necrosis of left finger(s), sequela
- T34.539Frostbite with tissue necrosis of unspecified finger(s)
- T34.539AFrostbite with tissue necrosis of unspecified finger(s), initial encounter
- T34.539DFrostbite with tissue necrosis of unspecified finger(s), subsequent encounter
- T34.539SFrostbite with tissue necrosis of unspecified finger(s), sequela
- T34.6Frostbite with tissue necrosis of hip and thigh
- T34.60Frostbite with tissue necrosis of unspecified hip and thigh
- T34.60XAFrostbite with tissue necrosis of unspecified hip and thigh, initial encounter
- T34.60XDFrostbite with tissue necrosis of unspecified hip and thigh, subsequent encounter
- T34.60XSFrostbite with tissue necrosis of unspecified hip and thigh, sequela
- T34.61Frostbite with tissue necrosis of right hip and thigh
- T34.61XAFrostbite with tissue necrosis of right hip and thigh, initial encounter
- T34.61XDFrostbite with tissue necrosis of right hip and thigh, subsequent encounter
- T34.61XSFrostbite with tissue necrosis of right hip and thigh, sequela
- T34.62Frostbite with tissue necrosis of left hip and thigh
- T34.62XAFrostbite with tissue necrosis of left hip and thigh, initial encounter
- T34.62XDFrostbite with tissue necrosis of left hip and thigh, subsequent encounter
- T34.62XSFrostbite with tissue necrosis of left hip and thigh, sequela
- T34.7Frostbite with tissue necrosis of knee and lower leg
- T34.70Frostbite with tissue necrosis of unspecified knee and lower leg
- T34.70XAFrostbite with tissue necrosis of unspecified knee and lower leg, initial encounter
- T34.70XDFrostbite with tissue necrosis of unspecified knee and lower leg, subsequent encounter
- T34.70XSFrostbite with tissue necrosis of unspecified knee and lower leg, sequela
- T34.71Frostbite with tissue necrosis of right knee and lower leg
- T34.71XAFrostbite with tissue necrosis of right knee and lower leg, initial encounter
- T34.71XDFrostbite with tissue necrosis of right knee and lower leg, subsequent encounter
- T34.71XSFrostbite with tissue necrosis of right knee and lower leg, sequela
- T34.72Frostbite with tissue necrosis of left knee and lower leg
- T34.72XAFrostbite with tissue necrosis of left knee and lower leg, initial encounter
- T34.72XDFrostbite with tissue necrosis of left knee and lower leg, subsequent encounter
- T34.72XSFrostbite with tissue necrosis of left knee and lower leg, sequela
- T34.8Frostbite with tissue necrosis of ankle, foot, and toe(s)
- T34.81Frostbite with tissue necrosis of ankle
- T34.811Frostbite with tissue necrosis of right ankle
- T34.811AFrostbite with tissue necrosis of right ankle, initial encounter
- T34.811DFrostbite with tissue necrosis of right ankle, subsequent encounter
- T34.811SFrostbite with tissue necrosis of right ankle, sequela
- T34.812Frostbite with tissue necrosis of left ankle
- T34.812AFrostbite with tissue necrosis of left ankle, initial encounter
- T34.812DFrostbite with tissue necrosis of left ankle, subsequent encounter
- T34.812SFrostbite with tissue necrosis of left ankle, sequela
- T34.819Frostbite with tissue necrosis of unspecified ankle
- T34.819AFrostbite with tissue necrosis of unspecified ankle, initial encounter
- T34.819DFrostbite with tissue necrosis of unspecified ankle, subsequent encounter
- T34.819SFrostbite with tissue necrosis of unspecified ankle, sequela
- T34.82Frostbite with tissue necrosis of foot
- T34.821Frostbite with tissue necrosis of right foot
- T34.821AFrostbite with tissue necrosis of right foot, initial encounter
- T34.821DFrostbite with tissue necrosis of right foot, subsequent encounter
- T34.821SFrostbite with tissue necrosis of right foot, sequela
- T34.822Frostbite with tissue necrosis of left foot
- T34.822AFrostbite with tissue necrosis of left foot, initial encounter
- T34.822DFrostbite with tissue necrosis of left foot, subsequent encounter
- T34.822SFrostbite with tissue necrosis of left foot, sequela
- T34.829Frostbite with tissue necrosis of unspecified foot
- T34.829AFrostbite with tissue necrosis of unspecified foot, initial encounter
- T34.829DFrostbite with tissue necrosis of unspecified foot, subsequent encounter
- T34.829SFrostbite with tissue necrosis of unspecified foot, sequela
- T34.83Frostbite with tissue necrosis of toe(s)
- T34.831Frostbite with tissue necrosis of right toe(s)
- T34.831AFrostbite with tissue necrosis of right toe(s), initial encounter
- T34.831DFrostbite with tissue necrosis of right toe(s), subsequent encounter
- T34.831SFrostbite with tissue necrosis of right toe(s), sequela
- T34.832Frostbite with tissue necrosis of left toe(s)
- T34.832AFrostbite with tissue necrosis of left toe(s), initial encounter
- T34.832DFrostbite with tissue necrosis of left toe(s), subsequent encounter
- T34.832SFrostbite with tissue necrosis of left toe(s), sequela
- T34.839Frostbite with tissue necrosis of unspecified toe(s)
- T34.839AFrostbite with tissue necrosis of unspecified toe(s), initial encounter
- T34.839DFrostbite with tissue necrosis of unspecified toe(s), subsequent encounter
- T34.839SFrostbite with tissue necrosis of unspecified toe(s), sequela
- T34.9Frostbite with tissue necrosis of other and unspecified sites
- T34.90Frostbite with tissue necrosis of unspecified sites
- T34.90XAFrostbite with tissue necrosis of unspecified sites, initial encounter
- T34.90XDFrostbite with tissue necrosis of unspecified sites, subsequent encounter
- T34.90XSFrostbite with tissue necrosis of unspecified sites, sequela
- T34.99Frostbite with tissue necrosis of other sites
- T34.99XAFrostbite with tissue necrosis of other sites, initial encounter
- T34.99XDFrostbite with tissue necrosis of other sites, subsequent encounter
- T34.99XSFrostbite with tissue necrosis of other sites, sequela
T34 MS-DRGs
As the principal diagnosis, the billable codes under T34 group to MS-DRG 922, 923, 949, or 950 (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 (74 of 111 codes)
- DRG 923 Other Injury, Poisoning and Toxic Effect Diagnoses without MCC (74 of 111 codes)
- DRG 949 Aftercare with CC/MCC (37 of 111 codes)
- DRG 950 Aftercare without CC/MCC (37 of 111 codes)
Other codes that refer to T34
Notes on these codes point to T34.
- I73 Excludes2: frostbite (T33-T34)
- S00-S09 Excludes2: frostbite (T33-T34)
- S10-S19 Excludes2: frostbite (T33-T34)
- S20-S29 Excludes2: frostbite (T33-T34)
- S30-S39 Excludes2: frostbite (T33-T34)
- S40-S49 Excludes2: frostbite (T33-T34)
- S50-S59 Excludes2: frostbite (T33-T34)
- S60-S69 Excludes2: frostbite (T33-T34)
- S70-S79 Excludes2: frostbite (T33-T34)
- S80-S89 Excludes2: frostbite (T33-T34)
- S90-S99 Excludes2: frostbite (T33-T34)
- T68 Excludes2: frostbite (T33-T34)
- T69 Excludes2: frostbite (T33-T34)
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Frostbite
Frostbite is an injury to the body that is caused by freezing. It most often affects the nose, ears, cheeks, chin, fingers, or toes. Frostbite can permanently damage the body, and severe cases can lead to amputation.
Read more about frostbite on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.