2027 ICD-10-CM Diagnosis Code M96.A1Fracture of sternum associated with chest compression and cardiopulmonary resuscitation

ICD-10-CM Codes›M00–M99›M96›M96

ICD-10-CM M96.A1
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

M96.A1 is a billable ICD-10-CM diagnosis code for fracture of sternum associated with chest compression and cardiopulmonary resuscitation. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 564 through 566, 963 through 965. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 5 closely related codes. Coders also document this condition as fracture of sternum due to and during cardiopulmonary resuscitation. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Fracture of torso, initial encounter.

Code Identity

ICD-10-CM Code
M96.A1
Billable Status
Yes — Valid for Submission
Code Describes
Fracture of sternum associated with chest compression and cardiopulmonary resuscitation
Short Description
Fx sternum assoc with chest comprsn and cardiopulm resus
Parent Code
M96.A
Fracture of ribs, sternum and thorax associated with compression of the chest and cardiopulmonary resuscitation

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM96Intraoperative and postprocedural complications and disorders of musculoskeletal system, not elsewhere classified
CategoryM96Intraoperative and postprocedural complications and disorders of musculoskeletal system, not elsewhere classified
This CodeM96.A1Fracture of sternum associated with chest compression and cardiopulmonary resuscitation

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Fracture of sternum due to and during cardiopulmonary resuscitation

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to M96.A1: its own notes plus those printed at M96 and Chapter 13. A note printed at a category, block or chapter applies to every code under it.

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Fracture of xiphoid process associated with chest compression and cardiopulmonary resuscitation

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 M96 Intraoperative and postprocedural complications and disorders of musculoskeletal system, not elsewhere classified applies to 36 codes
  • arthropathy following intestinal bypass (M02.0-)
  • complications of internal orthopedic prosthetic devices, implants and grafts (T84.-)
  • disorders associated with osteoporosis (M80)
  • periprosthetic fracture around internal prosthetic joint (M97.-)
  • presence of functional implants and other devices (Z96-Z97)
From Chapter 13 (M00-M99) Diseases of the musculoskeletal system and connective tissue applies to 6,687 codes
  • arthropathic psoriasis (L40.5-)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • compartment syndrome (traumatic) (T79.A-)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Notes

General instructions on how these codes are used.

From Chapter 13 (M00-M99) Diseases of the musculoskeletal system and connective tissue applies to 6,687 codes
  • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition

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

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name M96.A1, its category, or a range that includes it.

Excludes1 3

These codes carry an Excludes1 note naming M96.A1: they are not reported together with it, unless the two conditions are unrelated.

  • M40 Kyphosis and lordosis
    postprocedural kyphosis and lordosis (M96.-) names M96.-, which includes this code
  • Block M86-M90 Other osteopathies
    postprocedural osteopathies (M96.-) names M96.-, which includes this code
  • Block M91-M94 Chondropathies
    postprocedural chondropathies (M96.-) names M96.-, which includes this code

Excludes2 3

These codes carry an Excludes2 note naming M96.A1: its condition is not part of those codes, and both may be reported when the patient has both.

  • M95 Other acquired deformities of musculoskeletal system and connective tissue
    postprocedural musculoskeletal disorders (M96.-) names M96.-, which includes this code
  • Block T80-T88 Complications of surgical and medical care, not elsewhere classified
    intraoperative and postprocedural complications of specified body systems (D78.-, E36.-, E89.-, G97.3-, G97.4, H59.3-, H59.-, H95.2-, H95.3, I97.4-, I97.5, J95.6-, J95.7, K91.6-, L76.-, M96.-, N99.-) names M96.-, which includes this code
  • T81 Complications of procedures, not elsewhere classified
    intraoperative and postprocedural complications of specific body system (D78.-, E36.-, E89.-, G97.3-, G97.4, H59.3-, H59.-, H95.2-, H95.3, I97.4-, I97.5, J95, K91.-, L76.-, M96.-, N99.-) names M96.-, which includes this code

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

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

CCSR INJ003
Fracture of torso, initial encounter
Default principal diagnosis: inpatient Yes · outpatient Yes

Code History & ChangesHistory

Replacement M96.A1 replaces the following previously assigned code(s):

  • M96.89 - Oth intraop and postproc comp and disorders of the ms sys
  • Y84.8 - Oth medical procedures cause abn react/compl, w/o misadvnt
FY 2023AddedAdded to the ICD-10-CM code setEffective October 1, 2022.
FY 2024–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About M96.A1Overview

Is M96.A1 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report fracture of sternum associated with chest compression and cardiopulmonary resuscitation on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does M96.A1 group to?

When fracture of sternum associated with chest compression and cardiopulmonary resuscitation is the principal diagnosis on an inpatient stay, it groups to MS-DRG 564, 964, 965, 566, 565, 963, with relative weights from 0.7374 to 2.6361 depending on complications. Higher weights mean higher Medicare reimbursement.

Is M96.A1 a CC or MCC?

CMS lists M96.A1 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 5 closely related codes in its exclusion list.