S81.052A — Open bite, left knee, initial encounter
Is S81.052A billable?
Yes — S81.052A is billable for FY2027. S81.052A is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. S81.052A may be submitted for encounters from October 1, 2026 through September 30, 2027.
S81.052A at a glance
| Code | S81.052A |
|---|---|
| Description | Open bite, left knee, initial encounter |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "A" | initial encounter |
What does the 7th character "A" mean in S81.052A?
In S81.052A, the 7th character A means initial encounter. The 7th character is required for S81.052A to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does S81.052A group to?
S81.052A sits in MDC 09 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 604Trauma to the Skin, Subcutaneous Tissue and Breast with MCCmedical
- 605Trauma to the Skin, Subcutaneous Tissue and Breast without MCCmedical
How is S81.052A listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S81.05, the nearest indexed parent of S81.052A. Use them to find the family, then select the specific code.
- Bite › knee (s) (animal) (human)
Excludes1 — never code together — inherited from S81
The conditions below can never be reported together with S81.052A on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes1 — never code together — inherited from S81.05
The conditions below can never be reported together with S81.052A on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- superficial bite of knee (S80.27-)
Use additional code — inherited from Chapter 19
Report an additional code alongside S81.052A to fully describe the condition. S81.052A is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of S81.052A, but a patient may have both at the same time. When documentation supports it, S81.052A and the excluded code may both be reported.
Excludes2 — not included here — inherited from S80-S89
The conditions below are not part of S81.052A, but a patient may have both at the same time. When documentation supports it, S81.052A and the excluded code may both be reported.
Excludes2 — not included here — inherited from S81
The conditions below are not part of S81.052A, but a patient may have both at the same time. When documentation supports it, S81.052A and the excluded code may both be reported.
- open wound of ankle and foot (S91.-)
Code also — inherited from S81
Two codes may be needed to describe the condition fully. Whether S81.052A is sequenced first depends on the reason for the encounter.
- any associated wound infection
How long has S81.052A existed?
S81.052A has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.