Enhanced MS-DRG Definitions Manual

ICD-10-CM Diagnosis code M40

Kyphosis and lordosis

Code Hierarchy

Coding Guidelines for M40

M40 is a valid ICD-10-CM diagnosis code meaning 'Kyphosis and lordosis'.

Purely Excluded Conditions

These diag codes should never be used at the same time as M40 because these conditions cannot occur together:

  • congenital kyphosis and lordosis (Q76.4)
  • kyphoscoliosis (M41.-)
  • postprocedural kyphosis and lordosis (M96.-)

Must Code Etiology Before Coding M40

Some conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation.

M40 is a manifestation code. For it to be valid, one of the following etiology codes must also be coded first:

  • underlying disease

Complications & Comorbid Conditions (CC/MCC) Rules for M40

M40 is not a CC or MCC.

DRG Mapping Rules for M40

M40 doesn't map to any MS-DRGs.

About the Turquoise Health MS-DRG Manual Browser

We build tools and machine learning systems that simplify healthcare revenue cycle operations. We were frustrated with the formatting of the MS-DRG rules, so we built our own solution.

MS-DRG rules and ICD-10 CM/PCS codes are automatically parsed from CMS's MS-DRG data files. All content is provided strictly “AS IS” and may contain parsing errors. If you spot an error, please let us know.

We have converted the MS-DRG logic into fully structured, machine-readable data. If you need structured data versions of the MS-DRG manuals, we would love to talk with you.

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