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M83.0 vs O85-O92

M83.0 (Puerperal osteomalacia) compared with O85-O92 (Complications predominantly related to the puerperium (O85-O92)), from the official CMS tabular data.

Current data releases:ICD-10-CM FY2027 · ICD-10-PCS FY2027 · HCPCS October 2026 · MS-DRG v44 · Medicare Code Editor v44.0 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 28, 2026 · All releases and sources

Summary

These codes can be reported together when both conditions are documented, because O85-O92 lists M83.0 under Excludes2, which marks them as distinct conditions.

Official rule
What is different?

The conditions named, billing status and chapter.M83.0 is “Puerperal osteomalacia”; O85-O92 is “Complications predominantly related to the puerperium (O85-O92)”. O85-O92 is a non-billable header; M83.0 is billable. M83.0 sits in M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99); O85-O92 in O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A).

Registry fact

Can these codes be reported together?

Yes, when both are documented.O85-O92 lists M83.0 under Excludes2: “puerperal osteomalacia (M83.0)”. Excludes2 marks distinct conditions that may both be reported when both are documented.

Official ruleGuide: Excludes1 vs Excludes2

Is there an Excludes2 relationship?

Yes.O85-O92’s tabular entry: “puerperal osteomalacia (M83.0)”. The note covers M83.0.

Official ruleGuide: Excludes1 vs Excludes2

Is one a parent or header code?

One is a header.O85-O92 is a non-billable header, but M83.0 is not one of its subdivisions.

Registry fact

Nothing found in 3 other checks; 1 check does not apply
Is there an Excludes1 relationship?

None.Neither entry carries an Excludes1 note that names the other code. M83.0 carries 6 Excludes1 notes covering other codes; the side-by-side table quotes them.

Official rule

Is one more specific?

Not comparable.The codes sit in different categories; specificity is only comparable within one category.

Are there sequencing instructions?

None.Neither entry carries a Code First or Use Additional Code note that names the other.

Official rule

Are there other coding relationships?

None found.No laterality, encounter-phase, Table of Neoplasms, Table of Drugs and Chemicals, or history-versus-active-disease relationship links these codes.

MedCoder-derived

Official rule: a tabular instructional note or a section of the ICD-10-CM Official Guidelines, quoted as published. Registry fact: the codes’ own published attributes (titles, billable status, position in the hierarchy, code set). MedCoder-derived: a reading MedCoder computes from those facts; it is not itself a rule. How to read the labels

Can these codes be reported together?

Informational

Excludes2 relationship

O85-O92
Complications predominantly related to the puerperium (O85-O92)
↔
M83.0
Puerperal osteomalacia

What we found

Yes, when both are documented.O85-O92 carries an Excludes2 note covering M83.0: “puerperal osteomalacia (M83.0)”

Excludes2 marks distinct conditions — both may be reported when both are documented.

What to review

Report both only when the documentation supports both conditions; otherwise report the one documented.

Guide: Excludes1 vs Excludes2Check these on a claim

Why it matters

An Excludes2 note means the excluded condition is not part of the code above it, but a patient can have both. Report both when both are documented.

Source / rule

CMS ICD-10-CM tabular instructional notes

Official guidance behind these answers

  • Section I.A.12.b — Excludes2 · applies to: Excludes2

    A type 2 Excludes note represents “Not included here.” An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

    ICD-10-CM Official Guidelines FY2027

Quoted from the ICD-10-CM Official Guidelines for Coding and Reporting in effect for the release shown. The tabular notes above are the code-level instruction; these sections are the convention that says how such a note is applied. Source document (CMS PDF) · Release and checksum

Side by side

Similar descriptions do not make codes interchangeable. The documentation and the official instructions decide which code applies.

Official descriptionDiffers
M83.0

Puerperal osteomalacia

O85-O92

Complications predominantly related to the puerperium (O85-O92)

StatusDiffers
M83.0
Billable
O85-O92
Non-billable header

A header is not reported on a claim; a code beneath it is.

Excludes1Differs
M83.0
  • infantile and juvenile osteomalacia (E55.0)
  • renal osteodystrophy (N25.0)
  • rickets (active) (E55.0)
  • rickets (active) sequelae (E64.3)
  • vitamin D-resistant osteomalacia (E83.31)
  • vitamin D-resistant rickets (active) (E83.31)
O85-O92

None at this code

Excludes2Differs
M83.0

None at this code

O85-O92
  • mental and behavioral disorders associated with the puerperium (F53.-)
  • obstetrical tetanus (A34)
  • puerperal osteomalacia (M83.0)
CategoryDiffers
M83.0

M83 Adult osteomalacia

O85-O92

O85 Puerperal sepsis

ChapterDiffers
M83.0

M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99)

O85-O92

O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A)

No Code first, Use additional code, Code also, Includes and 7th character note at either code.

Notes are the code’s own tabular entry, quoted as published. A note that names the other code is the one the verdict above rests on. In a row that differs, each code’s own notes are listed under it, and the notes every code shares are listed once beneath them.

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Derived from the official CMS ICD-10-CM tabular data (FY2027). A coding-rule comparison, not billing advice: payer-specific edits and medical-necessity policy are outside its scope. All data sources