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ICD-10-CM 2027 diagnosis code

M94.0Chondrocostal junction syndrome [Tietze]

✓ Billable / specific

M94.0 is a valid, billable ICD-10-CM code for chondrocostal junction syndrome [tietze]. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Looking up by condition? See ICD-10 code for Costochondritis, ICD-10 code for Chondropathia tuberosa, ICD-10 code for Tietze's disease or syndrome.

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 M94.0

M94.0 is the ICD-10-CM diagnosis code for Chondrocostal junction syndrome [Tietze]. It belongs to category M94 (other disorders of cartilage), block M91-M94 (Chondropathies) 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 M94 (other disorders of cartilage), M94.0 is specifically for Chondrocostal junction syndrome [Tietze]. Related codes cover relapsing polychondritis (M94.1), Chondromalacia (M94.2), Chondrolysis (M94.3), other specified disorders of cartilage (M94.8) and disorder of cartilage, unspecified (M94.9).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 205 (Other Respiratory System Diagnoses with MCC, relative weight 1.8244) and DRG 206 (Other Respiratory System Diagnoses without MCC, relative weight 0.9257), in MDC 04 (Diseases and Disorders of the Respiratory System), 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 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 733.6 (Tietze's disease).

Coding notes

Applicable toConditions and synonyms classified to this code
  • Costochondritis

Notes that apply from higher levels

Instructions written at a parent level also apply to M94.0.

Broader instructions also apply from M91-M94 Chondropathies and Chapter 13: Diseases of the musculoskeletal system and connective tissue.

Alphabetic index entries

9 entries

Terms in the official ICD-10-CM index that lead to M94.0.

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 →
  • 733.6Tietze's diseaseexact

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
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about M94.0

Is M94.0 billable?

Yes. M94.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can M94.0 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict M94.0 as a principal diagnosis.

Is M94.0 a CC or MCC?

No. M94.0 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does M94.0 group to?

M94.0 is used in the MS-DRG v44.0 logic for MS-DRG 205 (Other Respiratory System Diagnoses with MCC) and MS-DRG 206 (Other Respiratory System Diagnoses without 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 M94.0?

The CMS General Equivalence Mappings map M94.0 to ICD-9-CM 733.6.