S96.999A – Other specified injury of unspecified muscle and tendon at ankle and foot level, unspecified foot, initial encounter

ICD-10-CM 2027 diagnosis code · Injuries to the ankle and foot

Billable code

ICD-10-CM code S96.999A

Code: S96.999A (claims format: S96999A)
Description: Other specified injury of unspecified muscle and tendon at ankle and foot level, unspecified foot, initial encounter
Short description: Inj unsp msl/tnd at ankle and foot level, unsp foot, init
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 19. Injury, poisoning and certain other consequences of external causes (S00-T88)
Block: S90-S99 Injuries to the ankle and foot
Parent codes: S96 › S96.9 › S96.99 › S96.999

7th character values

Codes in this category need a 7th character to describe the encounter or episode of care.

Character	Meaning
`A`	initial encounter
`D`	subsequent encounter
`S`	sequela

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

S96 – Injury of muscle and tendon at ankle and foot level

Excludes2 (not included here):

injury of Achilles tendon (S86.0-)
sprain of joints and ligaments of ankle and foot (S93.-)

Code also:

any associated open wound (S91.-)

7th character note:

The appropriate 7th character is to be added to each code from category S96

Block S90-S99

Excludes2 (not included here):

burns and corrosions (T20-T32)
fracture of ankle and malleolus (S82.-)
frostbite (T33-T34)
insect bite or sting, venomous (T63.4)

Related codes in S96.999

Frequently asked questions

What is ICD-10 code S96.999A?

S96.999A is the ICD-10-CM code for other specified injury of unspecified muscle and tendon at ankle and foot level, unspecified foot, initial encounter, in the block S90-S99 (Injuries to the ankle and foot).

Is S96.999A a billable code?

Yes. S96.999A is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does S96.999A belong to?

It belongs to category S96 – Injury of muscle and tendon at ankle and foot level.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.