S96.812D Strain of other specified muscles and tendons at ankle and foot level, left foot, subsequent encounter

ICD-10-CM S96.812D: Strain of other specified muscles and tendons at ankle and foot level, left foot, subsequent encounter

ICD-10-CM code S96.812D identifies a strain of other specified muscles and tendons at the ankle and foot level of the left foot during a subsequent encounter. This active diagnosis concept is classified under an injury or poisoning semantic type and appears in Medicare billing articles. 1 3

Plain-language overview

This diagnosis code represents an injury to specified muscles and tendons in the left foot or ankle, and its official label includes the subsequent encounter designation. 1

What this code represents

The official label for S96.812D is strain of other specified muscles and tendons at ankle and foot level, left foot, subsequent encounter, and the concept holds an active record status. 1

Within the terminology hierarchy, S96.812D is a narrower concept derived from the parent code S96.812, which denotes the identical left foot muscle and tendon strain without specifying the encounter. 1

Coding details

The code S96.812D specifies left foot laterality and uses the seventh character D to denote a subsequent encounter, distinguishing it from initial encounter and sequela variations. 5

Related codes in this category include S96.812A for the initial encounter and S96.812S for sequela of the same left foot muscle and tendon strain, alongside parallel codes for the right foot. 5

Documentation considerations

The official terminology for S96.812D explicitly designates the left foot location and the subsequent encounter for the muscle and tendon strain, providing specific details for clinical documentation. 1

Coverage and utilization context

The S96.812D code appears in a Medicare billing and coding article concerning injections for tendons, ligaments, ganglion cysts, tunnel syndromes, and Morton's neuroma. 3

What the sources add

While the terminology record defines the diagnosis code, a separate clinical review notes that non-pharmacological treatments serve as the first line of treatment for foot and ankle musculoskeletal conditions. 1 2

Both the National Cancer Institute terminology record and the Medicare billing article list the exact official description for S96.812D, confirming its operational use across different healthcare domains. 1 3

Sources

1. ICD-10-CM S96.812D terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. Musculoskeletal Conditions of the Foot and Ankle: Assessments and Treatment Options — pmc.ncbi.nlm.nih.gov; accessed 2026-07-27.
3. Article - Billing and Coding: Injections - Tendon, Ligament, Ganglion Cyst, Tunnel Syndromes and Morton's Neuroma (A57201) — cms.gov; accessed 2026-07-27.
4. EVS Explore — evsexplore.semantics.cancer.gov; accessed 2026-07-27.
5. ICD-10-CM 2024 | S96.81 - Strain of other specified muscles and tendons at ankle and foot level — unboundmedicine.com; accessed 2026-07-27.