2027 ICD-10-CM Diagnosis Code M96.821Accidental puncture and laceration of a musculoskeletal structure during other procedure
ICD-10-CM Codes›M00–M99›M96›M96
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Not Chronic
M96.821 is a billable ICD-10-CM diagnosis code for accidental puncture and laceration of a musculoskeletal structure during other procedure. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 791, 793, 919 through 921. 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 78 closely related codes. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Postprocedural or postoperative musculoskeletal system complication.
Code Identity
Code Classification
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to M96.821: 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.
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.
- 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.
- 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 M96.821, its category, or a range that includes it.
Excludes1 5
These codes carry an Excludes1 note naming M96.821: they are not reported together with it, unless the two conditions are unrelated.
- M25.3 Other instability of jointinstability of joint secondary to removal of joint prosthesis (M96.8-) names M96.8-, which includes this code
- M40 Kyphosis and lordosispostprocedural kyphosis and lordosis (M96.-) names M96.-, which includes this code
- Block M86-M90 Other osteopathiespostprocedural osteopathies (M96.-) names M96.-, which includes this code
- Block M91-M94 Chondropathiespostprocedural chondropathies (M96.-) names M96.-, which includes this code
- M96.81 Intraoperative hemorrhage and hematoma of a musculoskeletal structure complicating a procedureintraoperative hemorrhage and hematoma of a musculoskeletal structure due to accidental puncture and laceration during a procedure (M96.82-) names M96.82-, which includes this code
Excludes2 3
These codes carry an Excludes2 note naming M96.821: 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 tissuepostprocedural musculoskeletal disorders (M96.-) names M96.-, which includes this code
- Block T80-T88 Complications of surgical and medical care, not elsewhere classifiedintraoperative 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 classifiedintraoperative 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.
Convert M96.821 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About M96.821Overview
Is M96.821 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report accidental puncture and laceration of a musculoskeletal structure during other procedure on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does M96.821 group to?
When accidental puncture and laceration of a musculoskeletal structure during other procedure is the principal diagnosis on an inpatient stay, it groups to MS-DRG 793, 791, 920, 919, 921, with relative weights from 0.6719 to 4.2192 depending on complications. Higher weights mean higher Medicare reimbursement.
Is M96.821 a CC or MCC?
CMS lists M96.821 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 78 closely related codes in its exclusion list.
What is the ICD-9 equivalent of M96.821?
Under the General Equivalence Mappings, accidental puncture and laceration of a musculoskeletal structure during other procedure converts to ICD-9-CM 998.2 (accidental op laceration). The mapping is approximate, so confirm the match fits the documentation.
