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ICD-10-CM 2027 diagnosis code

M96.840Postprocedural hematoma of a musculoskeletal structure following a musculoskeletal system procedure

✓ Billable / specificCC — complication/comorbidity

M96.840 is a valid, billable ICD-10-CM code for postprocedural hematoma of a musculoskeletal structure following a musculoskeletal system procedure. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Postproc hematoma of a ms structure fol a ms sys procedure

Code last changed in FY2017 (effective October 1, 2016). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About M96.840

M96.840 is the ICD-10-CM diagnosis code for postprocedural hematoma of a musculoskeletal structure following a musculoskeletal system procedure. It belongs to category M96 (intraoperative and postprocedural complications and disorders of musculoskeletal system, not elsewhere classified), block M96 (intraoperative and postprocedural complications and disorders of musculoskeletal system, not elsewhere classified) and chapter 13 (diseases of the musculoskeletal system and connective tissue). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within M96.84 (postprocedural hematoma and seroma of a musculoskeletal structure following a procedure), M96.840 is specifically for postprocedural hematoma of a musculoskeletal structure following a musculoskeletal system procedure. Related codes cover hematoma of a musculoskeletal structure following other procedure (M96.841), seroma of a musculoskeletal structure following a musculoskeletal system procedure (M96.842) and seroma of a musculoskeletal structure following other procedure (M96.843).

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" 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 919 (Complications of Treatment with MCC, relative weight 1.763), DRG 920 (Complications of Treatment with CC, relative weight 0.9975) and DRG 921 (Complications of Treatment without CC/MCC, relative weight 0.6722), in MDC 21 (Injuries, Poisonings and Toxic Effects of Drugs), 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 was added in FY2017, effective October 1, 2016.

Before ICD-10, this condition was coded in ICD-9-CM as 998.12 (hematoma complicating a procedure).

Notes that apply from higher levels

Instructions written at a parent level also apply to M96.840.

› From M96 Intraoperative and postprocedural complications and disorders of musculoskeletal system, not elsewhere classified
Excludes2
  • 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)

Broader instructions also apply from Chapter 13: Diseases of the musculoskeletal system and connective tissue.

Alphabetic index entries

2 entries

Terms in the official ICD-10-CM index that lead to M96.840.

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.

ICD-9-CM equivalent

Converter →
  • 998.12Hematoma complicating a procedureapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2017 (effective 10/1/2016): Added
  • No changes since FY2017.

Common questions about M96.840

Is M96.840 billable?

Yes. M96.840 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can M96.840 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict M96.840 as a principal diagnosis.

Is M96.840 a CC or MCC?

M96.840 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.

What DRG does M96.840 group to?

M96.840 is used in the MS-DRG v44.0 logic for MS-DRG 919 (Complications of Treatment with MCC), MS-DRG 920 (Complications of Treatment with CC) and MS-DRG 921 (Complications of Treatment without CC/MCC). 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 M96.840?

The CMS General Equivalence Mappings map M96.840 to ICD-9-CM 998.12.