ICD-10-CM 2027 diagnosis code
S79.019ASalter-Harris Type I physeal fracture of upper end of unspecified femur, initial encounter for closed fracture
S79.019A is a valid, billable ICD-10-CM code for salter-harris type i physeal fracture of upper end of unspecified femur, initial encounter for closed fracture. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Sltr-haris Type I physeal fx upper end of unsp femur, init
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About S79.019A
S79.019A is the ICD-10-CM diagnosis code for Salter-Harris Type I physeal fracture of upper end of unspecified femur, initial encounter for closed fracture. It belongs to category S79 (other and unspecified injuries of hip and thigh), block S70-S79 (injuries to the hip and thigh) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
The 7th character "A" means initial encounter for closed fracture: use it while the patient is receiving active treatment for the condition.
As a secondary diagnosis it is an MCC (major complication or comorbidity), which can move an inpatient stay into the highest-paying "with MCC" MS-DRG of its family, unless the principal diagnosis excludes it.
In MS-DRG v44.0, it is part of the grouping logic for DRG 521 (Hip Replacement with Principal Diagnosis of Hip Fracture with MCC, relative weight 2.8515), DRG 522 (Hip Replacement with Principal Diagnosis of Hip Fracture without MCC, relative weight 2.1158), DRG 535 (Fractures of Hip and Pelvis with MCC, relative weight 1.2728), DRG 536 (Fractures of Hip and Pelvis without MCC, relative weight 0.807), DRG 791 (Prematurity with Major Problems, relative weight 4.1075), DRG 793 (Full Term Neonate with Major Problems, relative weight 4.2195) and 3 more, in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue), MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period) and MDC 24 (Multiple Significant Trauma), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
It is an unspecified code for which a more specific option (often laterality) exists, and the Medicare Code Editor flags it for review on inpatient claims.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Before ICD-10, this condition was coded in ICD-9-CM as 820.01 (closed fracture of epiphysis (separation) (upper) of neck of femur).
7th character
Ainitial encounter for closed fracture
CC/MCC status for this injury by encounter: MCC for A; Neither CC nor MCC for D, G, S; CC for K, P.
Other encounter types for S79.019:
Notes that apply from higher levels
Instructions written at a parent level also apply to S79.019A.
› From S79.01 Salter-Harris Type I physeal fracture of upper end of femur
- chronic slipped upper femoral epiphysis (nontraumatic) (M93.02-)
› From S79 Other and unspecified injuries of hip and thigh
- A fracture not indicated as open or closed should be coded to closed
Broader instructions also apply from S70-S79 Injuries to the hip and thigh and Chapter 19: Injury, poisoning and certain other consequences of external causes.
MS-DRG v44.0 grouping
All DRGs →Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.
MDC 08 · Diseases and Disorders of the Musculoskeletal System and Connective Tissue
MDC 08 · Diseases and Disorders of the Musculoskeletal System and Connective Tissue
MDC 15 · Newborns and Other Neonates with Conditions Originating in the Perinatal Period
MDC 15 · Newborns and Other Neonates with Conditions Originating in the Perinatal Period
ICD-9-CM equivalent
Converter →- 820.01Closed fracture of epiphysis (separation) (upper) of neck of femurapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about S79.019A
Is S79.019A billable?
- Yes. S79.019A is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
What does the "A" at the end of S79.019A mean?
- It is the 7th character for initial encounter for closed fracture. Per the official guidelines, use it while the patient is receiving active treatment for the condition.
Can S79.019A be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict S79.019A as a principal diagnosis.
Is S79.019A a CC or MCC?
- S79.019A is an MCC (major complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.
What DRG does S79.019A group to?
- S79.019A is used in the MS-DRG v44.0 logic for MS-DRG 521 (Hip Replacement with Principal Diagnosis of Hip Fracture with MCC), MS-DRG 522 (Hip Replacement with Principal Diagnosis of Hip Fracture without MCC), MS-DRG 535 (Fractures of Hip and Pelvis with MCC), MS-DRG 536 (Fractures of Hip and Pelvis without MCC), MS-DRG 791 (Prematurity with Major Problems), MS-DRG 793 (Full Term Neonate with Major Problems) and 3 more. Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.
What is the ICD-9 code for S79.019A?
- The CMS General Equivalence Mappings map S79.019A to ICD-9-CM 820.01.