Version 2024

2024 ICD-10-CM Diagnosis Code T23.7

Corrosion of third degree of wrist and hand

ICD-10-CM Code:
T23.7
ICD-10 Code for:
Corrosion of third degree of wrist and hand
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Injury, poisoning and certain other consequences of external causes
    (S00–T88)
    • Burns and corrosions of external body surface, specified by site
      (T20-T25)
      • Burn and corrosion of wrist and hand
        (T23)

T23.7 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of corrosion of third degree of wrist and hand. The code is not specific and is NOT valid for the year 2024 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Corrosion of third degree of wrist and hand

Non-specific codes like T23.7 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for corrosion of third degree of wrist and hand:

  • T23.70 for Corrosion of third degree of hand, unspecified site - NON-BILLABLE CODE

  • T23.701 for Corrosion of third degree of right hand, unspecified site - NON-BILLABLE CODE

  • Use T23.701A for initial encounter - BILLABLE CODE

  • Use T23.701D for subsequent encounter - BILLABLE CODE

  • Use T23.701S for sequela - BILLABLE CODE

  • T23.702 for Corrosion of third degree of left hand, unspecified site - NON-BILLABLE CODE

  • Use T23.702A for initial encounter - BILLABLE CODE

  • Use T23.702D for subsequent encounter - BILLABLE CODE

  • Use T23.702S for sequela - BILLABLE CODE

  • T23.709 for Corrosion of third degree of unspecified hand, unspecified site - NON-BILLABLE CODE

  • Use T23.709A for initial encounter - BILLABLE CODE

  • Use T23.709D for subsequent encounter - BILLABLE CODE

  • Use T23.709S for sequela - BILLABLE CODE

  • T23.71 for Corrosion of third degree of thumb (nail) - NON-BILLABLE CODE

  • T23.711 for Corrosion of third degree of right thumb (nail) - NON-BILLABLE CODE

  • Use T23.711A for initial encounter - BILLABLE CODE

  • Use T23.711D for subsequent encounter - BILLABLE CODE

  • Use T23.711S for sequela - BILLABLE CODE

  • T23.712 for Corrosion of third degree of left thumb (nail) - NON-BILLABLE CODE

  • Use T23.712A for initial encounter - BILLABLE CODE

  • Use T23.712D for subsequent encounter - BILLABLE CODE

  • Use T23.712S for sequela - BILLABLE CODE

  • T23.719 for Corrosion of third degree of unspecified thumb (nail) - NON-BILLABLE CODE

  • Use T23.719A for initial encounter - BILLABLE CODE

  • Use T23.719D for subsequent encounter - BILLABLE CODE

  • Use T23.719S for sequela - BILLABLE CODE

  • T23.72 for Corrosion of third degree of single finger (nail) except thumb - NON-BILLABLE CODE

  • T23.721 for Corrosion of third degree of single right finger (nail) except thumb - NON-BILLABLE CODE

  • Use T23.721A for initial encounter - BILLABLE CODE

  • Use T23.721D for subsequent encounter - BILLABLE CODE

  • Use T23.721S for sequela - BILLABLE CODE

  • T23.722 for Corrosion of third degree of single left finger (nail) except thumb - NON-BILLABLE CODE

  • Use T23.722A for initial encounter - BILLABLE CODE

  • Use T23.722D for subsequent encounter - BILLABLE CODE

  • Use T23.722S for sequela - BILLABLE CODE

  • T23.729 for Corrosion of third degree of unspecified single finger (nail) except thumb - NON-BILLABLE CODE

  • Use T23.729A for initial encounter - BILLABLE CODE

  • Use T23.729D for subsequent encounter - BILLABLE CODE

  • Use T23.729S for sequela - BILLABLE CODE

  • T23.73 for Corrosion of third degree of multiple fingers (nail), not including thumb - NON-BILLABLE CODE

  • T23.731 for Corrosion of third degree of multiple right fingers (nail), not including thumb - NON-BILLABLE CODE

  • Use T23.731A for initial encounter - BILLABLE CODE

  • Use T23.731D for subsequent encounter - BILLABLE CODE

  • Use T23.731S for sequela - BILLABLE CODE

  • T23.732 for Corrosion of third degree of multiple left fingers (nail), not including thumb - NON-BILLABLE CODE

  • Use T23.732A for initial encounter - BILLABLE CODE

  • Use T23.732D for subsequent encounter - BILLABLE CODE

  • Use T23.732S for sequela - BILLABLE CODE

  • T23.739 for Corrosion of third degree of unspecified multiple fingers (nail), not including thumb - NON-BILLABLE CODE

  • Use T23.739A for initial encounter - BILLABLE CODE

  • Use T23.739D for subsequent encounter - BILLABLE CODE

  • Use T23.739S for sequela - BILLABLE CODE

  • T23.74 for Corrosion of third degree of multiple fingers (nail), including thumb - NON-BILLABLE CODE

  • T23.741 for Corrosion of third degree of multiple right fingers (nail), including thumb - NON-BILLABLE CODE

  • Use T23.741A for initial encounter - BILLABLE CODE

  • Use T23.741D for subsequent encounter - BILLABLE CODE

  • Use T23.741S for sequela - BILLABLE CODE

  • T23.742 for Corrosion of third degree of multiple left fingers (nail), including thumb - NON-BILLABLE CODE

  • Use T23.742A for initial encounter - BILLABLE CODE

  • Use T23.742D for subsequent encounter - BILLABLE CODE

  • Use T23.742S for sequela - BILLABLE CODE

  • T23.749 for Corrosion of third degree of unspecified multiple fingers (nail), including thumb - NON-BILLABLE CODE

  • Use T23.749A for initial encounter - BILLABLE CODE

  • Use T23.749D for subsequent encounter - BILLABLE CODE

  • Use T23.749S for sequela - BILLABLE CODE

  • T23.75 for Corrosion of third degree of palm - NON-BILLABLE CODE

  • T23.751 for Corrosion of third degree of right palm - NON-BILLABLE CODE

  • Use T23.751A for initial encounter - BILLABLE CODE

  • Use T23.751D for subsequent encounter - BILLABLE CODE

  • Use T23.751S for sequela - BILLABLE CODE

  • T23.752 for Corrosion of third degree of left palm - NON-BILLABLE CODE

  • Use T23.752A for initial encounter - BILLABLE CODE

  • Use T23.752D for subsequent encounter - BILLABLE CODE

  • Use T23.752S for sequela - BILLABLE CODE

  • T23.759 for Corrosion of third degree of unspecified palm - NON-BILLABLE CODE

  • Use T23.759A for initial encounter - BILLABLE CODE

  • Use T23.759D for subsequent encounter - BILLABLE CODE

  • Use T23.759S for sequela - BILLABLE CODE

  • T23.76 for Corrosion of third degree of back of hand - NON-BILLABLE CODE

  • T23.761 for Corrosion of third degree of back of right hand - NON-BILLABLE CODE

  • Use T23.761A for initial encounter - BILLABLE CODE

  • Use T23.761D for subsequent encounter - BILLABLE CODE

  • Use T23.761S for sequela - BILLABLE CODE

  • T23.762 for Corrosion of third degree of back of left hand - NON-BILLABLE CODE

  • Use T23.762A for initial encounter - BILLABLE CODE

  • Use T23.762D for subsequent encounter - BILLABLE CODE

  • Use T23.762S for sequela - BILLABLE CODE

  • T23.769 for Corrosion of third degree back of unspecified hand - NON-BILLABLE CODE

  • Use T23.769A for initial encounter - BILLABLE CODE

  • Use T23.769D for subsequent encounter - BILLABLE CODE

  • Use T23.769S for sequela - BILLABLE CODE

  • T23.77 for Corrosion of third degree of wrist - NON-BILLABLE CODE

  • T23.771 for Corrosion of third degree of right wrist - NON-BILLABLE CODE

  • Use T23.771A for initial encounter - BILLABLE CODE

  • Use T23.771D for subsequent encounter - BILLABLE CODE

  • Use T23.771S for sequela - BILLABLE CODE

  • T23.772 for Corrosion of third degree of left wrist - NON-BILLABLE CODE

  • Use T23.772A for initial encounter - BILLABLE CODE

  • Use T23.772D for subsequent encounter - BILLABLE CODE

  • Use T23.772S for sequela - BILLABLE CODE

  • T23.779 for Corrosion of third degree of unspecified wrist - NON-BILLABLE CODE

  • Use T23.779A for initial encounter - BILLABLE CODE

  • Use T23.779D for subsequent encounter - BILLABLE CODE

  • Use T23.779S for sequela - BILLABLE CODE

  • T23.79 for Corrosion of third degree of multiple sites of wrist and hand - NON-BILLABLE CODE

  • T23.791 for Corrosion of third degree of multiple sites of right wrist and hand - NON-BILLABLE CODE

  • Use T23.791A for initial encounter - BILLABLE CODE

  • Use T23.791D for subsequent encounter - BILLABLE CODE

  • Use T23.791S for sequela - BILLABLE CODE

  • T23.792 for Corrosion of third degree of multiple sites of left wrist and hand - NON-BILLABLE CODE

  • Use T23.792A for initial encounter - BILLABLE CODE

  • Use T23.792D for subsequent encounter - BILLABLE CODE

  • Use T23.792S for sequela - BILLABLE CODE

  • T23.799 for Corrosion of third degree of multiple sites of unspecified wrist and hand - NON-BILLABLE CODE

  • Use T23.799A for initial encounter - BILLABLE CODE

  • Use T23.799D for subsequent encounter - BILLABLE CODE

  • Use T23.799S for sequela - BILLABLE CODE

Coding Guidelines

The ICD-10-CM makes a distinction between burns and corrosions. The burn codes are for thermal burns, except sunburns, that come from a heat source, such as a fire or hot appliance. The burn codes are also for burns resulting from electricity and radiation. Corrosions are burns due to chemicals. The guidelines are the same for burns and corrosions.

Sequence first the code that reflects the highest degree of burn when more than one burn is present.

  • When the reason for the admission or encounter is for treatment of external multiple burns, sequence first the code that reflects the burn of the highest degree.
  • When a patient has both internal and external burns, the circumstances of admission govern the selection of the principal diagnosis or first-listed diagnosis.
  • When a patient is admitted for burn injuries and other related conditions such as smoke inhalation and/or respiratory failure, the circumstances of admission govern the selection of the principal or first-listed diagnosis.

Current burns (T20-T25) are classified by depth, extent and by agent (X code). Burns are classified by depth as first degree (erythema), second degree (blistering), and third degree (full-thickness involvement).

Classify burns of the same local site (three-character category level, T20-T28) but of different degrees to the subcategory identifying the highest degree recorded in the diagnosis.

The appropriate 7th character is to be added to each code from block Burn and corrosion of wrist and hand (T23). Use the following options for the aplicable episode of care:

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Patient Education


Burns

A burn is damage to your body's tissues caused by heat, chemicals, electricity, sunlight, or radiation. Scalds from hot liquids and steam, building fires and flammable liquids and gases are the most common causes of burns. Another kind is an inhalation injury, caused by breathing smoke.

There are three types of burns:

  • First-degree burns damage only the outer layer of skin
  • Second-degree burns damage the outer layer and the layer underneath
  • Third-degree burns damage or destroy the deepest layer of skin and tissues underneath

Burns can cause swelling, blistering, scarring and, in serious cases, shock, and even death. They also can lead to infections because they damage your skin's protective barrier. Treatment for burns depends on the cause of the burn, how deep it is, and how much of the body it covers. Antibiotic creams can prevent or treat infections. For more serious burns, treatment may be needed to clean the wound, replace the skin, and make sure the patient has enough fluids and nutrition.

NIH: National Institute of General Medical Sciences


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.