T23.20XA

Burn of second degree of wrist and hand, unspecified site, initial encounter

T23.20XA is a specific clinical descriptor for a second-degree (partial-thickness) burn involving the wrist and hand, presented during the initial encounter for active treatment. In a second-degree burn, the thermal or chemical damage extends beyond the epidermis into the papillary and sometimes the reticular layer of the dermis. This level of injury is characterized by the destruction of the basement membrane, leading to fluid leakage and the formation of characteristic blisters. For the hand and wrist, these injuries are clinically significant due to the risk of functional impairment, contractures, and the high density of nerve endings which result in intense pain. The 'unspecified site' designation indicates that the documentation does not differentiate whether the burn is on the palm, back of the hand, or specific digits, though the severity is confirmed as partial-thickness.

Clinical Symptoms

  • Intense localized pain and hypersensitivity
  • Blistering (bullae) of the skin at the site of injury
  • Moist, weeping, or glistening appearance of the skin
  • Erythema (redness) that blanches under pressure
  • Edema and swelling of the wrist or hand
  • Limited range of motion in the fingers or wrist due to pain
  • Altered sensation in the affected area
  • Skin that is warm to the touch

Common Causes

  • Scalding from hot liquids (steam or hot water)
  • Direct contact with hot objects (conduction)
  • Exposure to open flames
  • Flash burns from explosions
  • Chemical exposure to corrosive acids or bases
  • Radiation exposure (prolonged UV or therapeutic radiation)
  • Electrical current contact

Documentation & Coding Tips

Specify the exact anatomical location within the wrist and hand region whenever possible to avoid the unspecified site code.

Example: Patient presents for initial encounter of a second-degree burn of the right hand dorsum and wrist after spilling boiling water. Blistering is noted over a 3 percent total body surface area. The burn is limited to the partial thickness of the dermis. Diagnosis: Burn of second degree of right hand, initial encounter. Billing Focus: Laterality (Right) and anatomical specificity (Dorsum). Risk Adjustment: Impacted by TBSA percentage (T31 series) and severity of the partial-thickness injury.

Billing Focus: Laterality and specific sub-site (e.g., palm, finger, dorsum).

Document the depth of the burn using clinical terms like partial-thickness to support the second-degree classification.

Example: Initial evaluation of thermal injury to the left wrist. Examination reveals erythema and large bullae consistent with a partial-thickness second-degree burn. No evidence of full-thickness tissue loss. Total body surface area involved is less than 10 percent. Billing Focus: Depth of burn (Second degree). Risk Adjustment: Severity is captured through the second-degree designation versus first or third degree.

Billing Focus: Degree of burn (partial thickness vs superficial).

Clearly identify the encounter status as initial, subsequent, or sequela using the appropriate seventh character.

Example: First visit for a 45-year-old male with a splash burn to the hand and wrist. Patient is receiving active treatment including debridement of necrotic skin. This is the initial encounter for this injury. Billing Focus: Seventh character A for initial encounter. Risk Adjustment: Initial encounters typically carry higher resource intensity than subsequent healing phases.

Billing Focus: Seventh character A for active treatment.

Include the Total Body Surface Area (TBSA) percentage using the T31 category codes as a supplemental diagnosis.

Example: Second-degree burn of the wrist and hand involving 2 percent TBSA. Patient has no comorbid diabetes or peripheral vascular disease. Treatment initiated with silver sulfadiazine. Billing Focus: Requirement for T31.0 (Burns involving less than 10 percent of body surface). Risk Adjustment: TBSA percentage is a critical factor for severity weighting in burn cases.

Billing Focus: TBSA percentage (T31 series).

Always document the external cause and intent of the injury to satisfy trauma coding requirements.

Example: Initial encounter for second-degree burn of hand and wrist. Injury occurred when the patient was cooking at home and a pan of hot oil ignited (External Cause: X10.0XXA). Billing Focus: External cause code (X-series). Risk Adjustment: Context of injury can influence secondary diagnosis reporting for social determinants of health.

Billing Focus: External cause codes (how, where, and activity).

Relevant CPT Codes

Related Diagnoses

Hierarchy