2027 ICD-10-CM Diagnosis Code S58.919SComplete traumatic amputation of unspecified forearm, level unspecified, sequela
ICD-10-CM Codes›S00–T88›S50-S59›S58
- Billable — Valid for Submission
- POA Exempt
- 7th Character S — Sequela
- Chronic Condition
S58.919S is a billable ICD-10-CM diagnosis code for complete traumatic amputation of unspecified forearm, level unspecified, sequela. The 7th character S marks it as a sequela code, which reports a problem that remains after the original condition has resolved. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 559 through 561. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Injury, sequela.
S58.919S no longer risk-adjusts for Medicare Advantage: it mapped to HCC 189 under the retired CMS-HCC V24 model through payment year 2025 but maps to no category in the live V28 model. It still risk-adjusts in the PACE (CMS-HCC V22) category 189, ESRD (V21) category 189, and ESRD (V24) category 189 for payment year 2027.
Code Identity
Code Classification
Present on Admission (POA)Billing
S58.919S is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Injuries to the elbow and forearm (S50-S59).
Medicare Risk Adjustment (HCC)Billing
S58.919S no longer risk-adjusts for Medicare Advantage: it maps to no payment category in the live CMS-HCC V28 model, although it still risk-adjusts in the other CMS models shown below.
Source: CMS Payment Year 2027 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Traumatic amputation of elbow and forearm (S58). Use the following options for the applicable episode of care:
- A - initial encounter
- D - subsequent encounter
- S - sequela
Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027, published by CMS and the National Center for Health Statistics.
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to S58.919S: its own notes plus those printed at S58.9, S58, block S50-S59, and Chapter 19. A note printed at a category, block or chapter applies to every code under it.
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
- traumatic amputation of wrist (S68.-)
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
Use Additional Code
Add a second code, after this one, to fully describe the condition.
- code to identify any retained foreign body, if applicable (Z18.-)
Notes
General instructions on how these codes are used.
- Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
- The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.
7th Character
Every code in the category takes a 7th character from the listed values, with the placeholder X filling any empty positions before it.
- The appropriate 7th character is to be added to each code from category S58
- Ainitial encounter
- Dsubsequent encounter
- Ssequela this code
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name S58.919S, its category, or a range that includes it.
Excludes1 2
These codes carry an Excludes1 note naming S58.919S: they are not reported together with it, unless the two conditions are unrelated.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Limb Loss
People can lose all or part of an arm or leg for many reasons. Common ones include:
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert S58.919S to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About S58.919SOverview
Is S58.919S a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report complete traumatic amputation of unspecified forearm, level unspecified, sequela on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What does the 7th character S in S58.919S mean?
The final character S makes this a sequela code: it reports a lingering problem that remains after the complete traumatic amputation of unspecified forearm, level unspecified itself has resolved, not the original event.
What MS-DRG does S58.919S group to?
When complete traumatic amputation of unspecified forearm, level unspecified, sequela is the principal diagnosis on an inpatient stay, it groups to MS-DRG 559, 561, 560, with relative weights from 0.8258 to 1.8087 depending on complications. Higher weights mean higher Medicare reimbursement.
Is S58.919S exempt from POA reporting?
Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for complete traumatic amputation of unspecified forearm, level unspecified, sequela on inpatient claims. The code appears in the Injuries to the elbow and forearm (S50-S59) range of the CMS exempt list.
Can S58.919S be reported with a code from S68?
Not as a rule. The Excludes1 note at S58.9, which applies to S58.919S, lists "traumatic amputation of wrist (S68.-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
Does S58.919S risk-adjust for Medicare Advantage payment?
Not for Medicare Advantage. S58.919S mapped to HCC 189 in the retired CMS-HCC V24 model, which last determined payment in 2025, but it maps to no category in the live V28 model; see all codes that no longer risk-adjust. It still risk-adjusts in the PACE (CMS-HCC V22) category 189 (Amputation Status/Lower Limb/Amputation Complications), ESRD (V21) category 189 (Amputation Status/Lower Limb/Amputation Complications), and ESRD (V24) category 189 (Amputation Status/Lower Limb/Amputation Complications).
