T23.772S Corrosion of third degree of left wrist, sequela

ICD-10-CM T23.772S: Corrosion of third degree of left wrist, sequela

ICD-10-CM code T23.772S is an active terminology concept labeled corrosion of third degree of left wrist, sequela. The record assigns it the semantic type of injury or poisoning and lists it as a narrower concept under T23.772. It is distinct from the initial and subsequent encounter codes for the same injury. 1 5 2

Plain-language overview

The official terminology record for T23.772S identifies the concept as a corrosion of third degree of left wrist, sequela, and classifies it under the semantic type of injury or poisoning. 1 5

What this code represents

Code T23.772S is an active concept that has narrower concepts in the terminology and is listed under the parent concept T23.772, which is labeled corrosion of third degree of left wrist. 1

The terminology record lists T23.772S alongside T23.772A for the initial encounter and T23.772D for the subsequent encounter, establishing distinct codes for different encounter phases. 2 6

Coding details

The broader category T23.7 includes corrosions of third degree of wrist and hand, and the code tree lists specific variations for different degrees, lateralities, and encounter phases. 6

The code tree contains separate entries for left wrist corrosions of first, second, and third degrees, as well as entries for right wrist and unspecified wrist sequelae. 6

Documentation considerations

The terminology record distinguishes T23.772S from the initial encounter code T23.772A and the subsequent encounter code T23.772D, which are assigned different seventh characters. 2 6

What the sources add

The National Cancer Institute terminology record defines the code's preferred name, parent concept, and semantic type, while a separate clinical code tree lists related codes for varying degrees and lateralities. 1 6

Coverage and utilization context

Medicare billing and coding articles for immunizations include T23.772A, the initial encounter code for a third-degree corrosion of the left wrist, within their code listings. 3 4

Sources

1. ICD-10-CM T23.772S terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. EVS Explore — evsexplore.semantics.cancer.gov; accessed 2026-07-27.
3. Article - Billing and Coding: Tetanus Immunization (A52438) — cms.gov; accessed 2026-07-27.
4. Article - Billing and Coding: Immunizations (A56900) — cms.gov; accessed 2026-07-27.
5. EVS Explore — evsexplore.semantics.cancer.gov; accessed 2026-07-27.
6. ICD-10-CM 2024 | T23 - Burn and corrosion of wrist and hand — unboundmedicine.com; accessed 2026-07-27.