2027 ICD-10-CM Diagnosis Code S79.919AUnspecified injury of unspecified hip, initial encounter

ICD-10-CM Codes›S00–T88›S70-S79›S79

ICD-10-CM S79.919A
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

S79.919A is a billable ICD-10-CM diagnosis code for unspecified injury of unspecified hip, initial encounter. The 7th character A marks it as an initial encounter code, used while the patient is receiving active treatment. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 913 through 914, 963 through 965. Coders also document this condition as injury of bursa of hip. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other unspecified injury.

Code Identity

ICD-10-CM Code
S79.919A
Billable Status
Yes — Valid for Submission
Code Describes
Unspecified injury of unspecified hip, initial encounter
Short Description
Unspecified injury of unspecified hip, initial encounter
Same as the full description in the CMS dataset.
Parent Code
S79.919
Unspecified injury of unspecified hip

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionS70-S79Injuries to the hip and thigh
CategoryS79Other and unspecified injuries of hip and thigh
This CodeS79.919AUnspecified injury of unspecified hip, initial encounter

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Injury of bursa of hip
  • Injury of hip and thigh
  • Injury of hip region
  • Multiple injuries of hip

Coding GuidelinesGuidance

The appropriate 7th character is to be added to each code from block Other and unspecified injuries of hip and thigh (S79). 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 S79.919A: its own notes plus those printed at S79.9, S79, block S70-S79, and Chapter 19. A note printed at a category, block or chapter applies to every code under it.

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.

From Block S70-S79 Injuries to the hip and thigh applies to 3,546 codes
From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • code to identify any retained foreign body, if applicable (Z18.-)

Notes

General instructions on how these codes are used.

From S79 Other and unspecified injuries of hip and thigh applies to 198 codes
  • A fracture not indicated as open or closed should be coded to closed
From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • 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.

From S79.9 Unspecified injury of hip and thigh applies to 18 codes
  • The appropriate 7th character is to be added to each code in subcategory S79.9
From S79 Other and unspecified injuries of hip and thigh applies to 198 codes
  • The appropriate 7th character is to be added to each code from subcategories S79.0 and S79.1
Values for category S79.9 Encounter: Initial, Subsequent, Sequela
  • Ainitial encounter this code
  • Dsubsequent encounter
  • Ssequela

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR INJ027
Other unspecified injury
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Hip Injuries and Disorders

Your hip is the joint where your femur (thigh bone) meets your pelvis (hip bone). There are two main parts: a ball at the end of the femur, which fits in a socket in the pelvis. Your hip is known as a ball-and-socket joint. This is because you have a ball at the end of your femur, and it fits into a socket in your pelvis.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert S79.919A to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
959.6 Hip & thigh injury NOS
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About S79.919AOverview

What is the ICD-10 code for unspecified injury of unspecified hip, initial encounter?

The ICD-10-CM code for unspecified injury of unspecified hip, initial encounter is S79.919A (sometimes written as S79919A). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is S79.919A (Unspecified injury of unspecified hip) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report unspecified injury of unspecified hip, initial encounter on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What does the 7th character A in S79.919A mean?

The final character A marks the initial encounter: use it while the patient is receiving active treatment for unspecified injury of unspecified hip, such as an emergency visit or first evaluation.

What MS-DRG does S79.919A group to?

When unspecified injury of unspecified hip, initial encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 964, 965, 914, 913, 963, with relative weights from 0.9281 to 2.6361 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of S79.919A?

Under the General Equivalence Mappings, unspecified injury of unspecified hip, initial encounter converts to ICD-9-CM 959.6 (hip & thigh injury NOS). The mapping is approximate, so confirm the match fits the documentation.