FY2025 · 04-01
Effective from
- Inherited rules changed
Open bite of left front wall of thorax without penetration into thoracic cavity, sequela
Billable diagnosis code
CDC/NCHS · FY2025 · 04-01code to identify any retained foreign body, if applicable (Z18.-)
traumatic amputation (partial) of thorax (S28.1)
A — initial encounter
D — subsequent encounter
S — sequela
superficial bite of front wall of thorax (S20.37)
Coverage depends on the payer, service and applicable policy. A billable code does not guarantee payment.
For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.
Use the service date for outpatient/professional claims and the discharge date for hospital inpatient claims. Earlier encounters use ICD-9-CM; each individual code must also be valid for the applicable date.
Official coding guidelines → · CMS ↗First observed · 2015-10-01
Latest recorded change · FY2025 · 04-01
Effective from
Open bite of left front wall of thorax without penetration into thoracic cavity, sequela
Billable diagnosis code
CDC/NCHS · FY2025 · 04-01| All editions | Effective from | Code history |
|---|---|---|
| FY2016 | 2015-10-01 | First observed |
| FY2017 | 2016-10-01 | No tabular change |
| FY2018 | 2017-10-01 | No tabular change |
| FY2019 | 2018-10-01 | No tabular change |
| FY2020 | 2019-10-01 | No tabular change |
| FY2020 · April | 2020-04-01 | No tabular change |
| FY2021 | 2020-10-01 | No tabular change |
| FY2021 · 01-01 | 2021-01-01 | No tabular change |
| FY2022 | 2021-10-01 | No tabular change |
| FY2022 · 04-01 | 2022-04-01 | No tabular change |
| FY2023 | 2022-10-01 | No tabular change |
| FY2023 · 04-01 | 2023-04-01 | No tabular change |
| FY2024 | 2023-10-01 | No tabular change |
| FY2024 · 04-01 | 2024-04-01 | No tabular change |
| FY2025 | 2024-10-01 | No tabular change |
| FY2025 · 04-01 | 2025-04-01 | Inherited rules changed |
| FY2026 | 2025-10-01 | No tabular change |
| FY2026 · April | 2026-04-01 | No tabular change |
| FY2027 | 2026-10-01 | No tabular change |
Historical mapping only; not an automatic code substitution.
The official Tabular List has no additional instructions at this code level.
Review the instructions inherited from its parent categories below. Inherited instructions ↓
code to identify any retained foreign body, if applicable (Z18.-)
traumatic amputation (partial) of thorax (S28.1)
The appropriate 7th character is to be added to each code from category S21
A — initial encounter
D — subsequent encounter
S — sequela
Open wound of chest without penetration into thoracic cavity
Bite of front wall of thorax NOS
superficial bite of front wall of thorax (S20.37)
Other entries in the same category; these are not automatic substitutes.
| Code | Description | Category · further specificity required |
|---|---|---|
| S21.152A | Open bite of left front wall of thorax without penetration into thoracic cavity, initial encounter | Billable / specific |
| S21.152D | Open bite of left front wall of thorax without penetration into thoracic cavity, subsequent encounter | Billable / specific |
Official titles and instructions are preserved in their source language. Official sources ↗