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ICD-10-CM 2027 diagnosis code

Q72.52Longitudinal reduction defect of left tibia

✓ Billable / specificPOA exempt

Q72.52 is a valid, billable ICD-10-CM code for longitudinal reduction defect of left tibia. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

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 Q72.52

Q72.52 is the ICD-10-CM diagnosis code for longitudinal reduction defect of left tibia. It belongs to category Q72 (reduction defects of lower limb), block Q65-Q79 (congenital malformations and deformations of the musculoskeletal system) and chapter 17 (congenital malformations, deformations, chromosomal abnormalities, and genetic disorders). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within Q72.5 (longitudinal reduction defect of tibia), Q72.52 is specifically for longitudinal reduction defect of left tibia. Related codes cover unspecified tibia (Q72.50), right tibia (Q72.51) and bilateral (Q72.53).

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 564 (Other Musculoskeletal System and Connective Tissue Diagnoses with MCC, relative weight 1.4908), DRG 565 (Other Musculoskeletal System and Connective Tissue Diagnoses with CC, relative weight 0.9783) and DRG 566 (Other Musculoskeletal System and Connective Tissue Diagnoses without CC/MCC, relative weight 0.7378), in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue), 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 is exempt from present-on-admission (POA) reporting, so no POA indicator is required.

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 755.36 (longitudinal deficiency, tibia, complete or partial (with or without distal deficiencies, incomplete)).

Notes that apply from higher levels

Instructions written at a parent level also apply to Q72.52.

Broader instructions also apply from Chapter 17: Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders.

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 →
  • 755.36Longitudinal deficiency, tibia, complete or partial (with or without distal deficiencies, incomplete)approximate

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 Q72.52

Is Q72.52 billable?

Yes. Q72.52 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can Q72.52 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict Q72.52 as a principal diagnosis.

Is Q72.52 a CC or MCC?

No. Q72.52 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does Q72.52 group to?

Q72.52 is used in the MS-DRG v44.0 logic for MS-DRG 564 (Other Musculoskeletal System and Connective Tissue Diagnoses with MCC), MS-DRG 565 (Other Musculoskeletal System and Connective Tissue Diagnoses with CC) and MS-DRG 566 (Other Musculoskeletal System and Connective Tissue Diagnoses 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 Q72.52?

The CMS General Equivalence Mappings map Q72.52 to ICD-9-CM 755.36.