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K00.8 ICD-10-CM Code: Other disorders of tooth development

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Coding at a Glance

Tabular directives
2 inclusion terms · 2 Excludes2

Inpatient Payment Groups (MS-DRG)

Potential MS-DRG participation — not a DRG assignment.

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v44, Appendix B.

  • MS-DRG 011 — TRACHEOSTOMY FOR FACE, MOUTH AND NECK DIAGNOSES OR LARYNGECTOMY WITH MCC (MDC PRE)
  • MS-DRG 012 — TRACHEOSTOMY FOR FACE, MOUTH AND NECK DIAGNOSES OR LARYNGECTOMY WITH CC (MDC PRE)
  • MS-DRG 013 — TRACHEOSTOMY FOR FACE, MOUTH AND NECK DIAGNOSES OR LARYNGECTOMY WITHOUT CC/MCC (MDC PRE)
  • MS-DRG 157 — DENTAL AND ORAL DISEASES WITH MCC (MDC 03)
  • MS-DRG 158 — DENTAL AND ORAL DISEASES WITH CC (MDC 03)
  • MS-DRG 159 — DENTAL AND ORAL DISEASES WITHOUT CC/MCC (MDC 03)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for K00.8 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2027Effective: October 1, 2026

Trace:FY2027 changesChange historyRelease, file and checksum

Notes without a marker are published on K00.8 itself; “inherited from” names the category or block whose note applies here.

Inclusion Terms

Alternative terms the tabular list files under this code.

  • Color changes during tooth formation
  • Intrinsic staining of teeth NOS

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

Coder workflow for K00.8

MedCoder structured workflow — derived from this code’s own official record

Before you code K00.8

  1. “Other” (NEC) means the condition is specified in the record but no dedicated code captures it. Confirm the documented form is not one a sibling code names before settling on K00.8; if the record states no specifics at all, the unspecified sibling applies instead. “Other” codes are for documented conditions the classification gives no specific code; “unspecified” codes are for records lacking the detail (Guidelines I.A.9.a, I.A.9.b).

    ReviewK00.0, K00.1, K00.2, K00.3, K00.4, K00.6, K00.7

    See the relationships section · Guide: Other vs unspecified (NEC vs NOS) →

Documentation check

The provider’s diagnostic statement
Codes are assigned from the provider’s documented diagnosis, not from clinical criteria, test values or a medication list (Guidelines I.A.19).
Any detail beyond this code’s title
What the record states that a more specific sibling code would capture — or its absence, which itself supports the unspecified code.

Official instructions as workflow

  • Excludes2 — not part of K00.8(2 notes)

    Coding workflow: The conditions named in this note are not included in K00.8. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

    CompareK03.7, K01

    See the official tabular notes · Guidelines I.A.12.b

Every row is derived from this code’s own record — its title, tabular notes, 7th-character family and same-category siblings — with fixed MedCoder wording; nothing is inferred about a patient. The official notes and guideline text are in the sections each row links to, and they control.

Coding context

The comparisons, hierarchy, index entries, guidelines, relationships, risk-adjustment and coverage context a coder commonly needs. Each section names whether it is official source data, a MedCoder-derived relationship or MedCoder editorial.

Don’t confuse K00.8 with…

MedCoder analysis — pairs from this code’s official notes, distinctions written by MedCoder

The codes most likely to be picked instead of K00.8 — named in its own official notes, or sharing its laterality or encounter family — with what separates them and which documentation moves the case. Each links to the full comparison.

  • K00.9— Specificity relationship (Review)

    Overlapping diagnoses in the same category.

    Overlapping codes in the same category — the documentation decides which is the more specific fit.

    What moves you there: A record that documents no more than “Disorder of tooth development, unspecified” takes K00.9; specificity in the record moves it back here.

    Full comparison: K00.8 vs K00.9 →

  • K03.7— Excludes2 relationship (Informational)

    Distinct conditions — both may be reported.

    A distinct condition — both may be reported when both are documented.

    What moves you there: Documentation of posteruptive color changes adds K03.7; it is not part of this code and both may be reported when both are documented.

    Full comparison: K00.8 vs K03.7 →

  • K01— Excludes2 relationship (Informational)

    Distinct conditions — both may be reported.

    A distinct condition — both may be reported when both are documented.

    What moves you there: Documentation of embedded and impacted teeth adds K01; it is not part of this code and both may be reported when both are documented.

    Full comparison: K00.8 vs K01 →

Relationships are read from this code's own official notes, its laterality siblings and its encounter family; the wording of each distinction is MedCoder editorial, and the documentation named in each “what moves you there” line is the official note phrase or sibling title itself. Source: CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a.

Code Overview

Other disorders of tooth development is a billable ICD-10-CM diagnosis code (K00.8).

MedCoder summary Summary composed by MedCoder from this code's official ICD-10-CM record. The tabular instructional notes themselves appear verbatim below.

Indexed Clinical Terms (5)

Official source data — entries quoted as published, in the Index’s own lookup phrasing

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code. These are alphabetic-index entries shown as the Index writes them — lookup phrasing, not necessarily the wording of a final diagnosis.

Official Coding Guidelines

No excerpt in the ICD-10-CM Official Guidelines names this code specifically. Its chapter carries only this chapter-wide note:

Chapter 11: Diseases of the Digestive System (K00-K95)

Reserved for future guideline expansion

Verify Before Coding

  • No Medicare Code Editor or MS-DRG Definitions Manual restrictions apply to this code.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim in Claim Check.

Relationships & Classification

MedCoder structured relationships — computed from published CMS and AHRQ datasets

MS-DRG Grouper Relationships (FY2027)

Potential MS-DRG participation — not a DRG assignment.

FY2027 MS-DRG: not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity for that release.

Named in the grouper logic of 6 MS-DRGs: DRG 011 (MDC PRE), DRG 012 (MDC PRE), DRG 013 (MDC PRE), DRG 157 (MDC 03), DRG 158 (MDC 03), DRG 159 (MDC 03).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):DIG002 — Disorders of teeth and gingiva (default); DEN001 — Any dental condition including traumatic injury; DEN002 — Nontraumatic dental conditions.

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Related Codes

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical categories (Disorders of teeth and gingiva, Any dental condition including traumatic injury, Nontraumatic dental conditions).

G11.5 — Hypomyelination - hypogonadotropic hypogonadism - hypodontia, K00.0 — Anodontia, K00.1 — Supernumerary teeth, K00.2 — Abnormalities of size and form of teeth, K00.3 — Mottled teeth, K00.4 — Disturbances in tooth formation, K00.5 — Hereditary disturbances in tooth structure, not elsewhere classified, K00.6 — Disturbances in tooth eruption, K00.7 — Teething syndrome, K00.9 — Disorder of tooth development, unspecified, K01.0 — Embedded teeth, K01.1 — Impacted teeth, K02.3 — Arrested dental caries, K02.51 — Dental caries on pit and fissure surface limited to enamel, K02.52 — Dental caries on pit and fissure surface penetrating into dentin, K02.53 — Dental caries on pit and fissure surface penetrating into pulp, K02.61 — Dental caries on smooth surface limited to enamel, K02.62 — Dental caries on smooth surface penetrating into dentin, K02.63 — Dental caries on smooth surface penetrating into pulp, K02.7 — Dental root caries, +613 more

Same Index main term, other category

The ICD-10-CM Index to Diseases and Injuries files this code under the main terms “Stain, staining”, “Discoloration”, “Change”; these codes share that main term but sit in a different category of the Tabular List.

H18.32 — Folds in Descemet's membrane (corneal membrane, Descemet's membrane, fold), H18.33 — Rupture in Descemet's membrane (corneal membrane, Descemet's membrane, rupture), H35.9 — Unspecified retinal disorder (retina), H44.2 — Degenerative myopia (retina, myopic), I73.9 — Peripheral vascular disease, unspecified (vasomotor), I99.9 — Unspecified disorder of circulatory system (vascular), J34.3 — Hypertrophy of nasal turbinates (hypertrophic, turbinate, nasal), J34.89 — Other specified disorders of nose and nasal sinuses (hypertrophic, nasal sinus), J38.7 — Other diseases of larynx (hyperplastic larynx), J39.8 — Other specified diseases of upper respiratory tract (hypertrophic, upper respiratory tract), K03.6 — Deposits [accretions] on teeth (tooth, teeth), K03.7 — Posteruptive color changes of dental hard tissues (teeth), K04.2 — Pulp degeneration (dental pulp, regressive), L56.8 — Other specified acute skin changes due to ultraviolet radiation (skin, acute, due to ultraviolet radiation, specified NEC), L56.9 — Acute skin change due to ultraviolet radiation, unspecified (skin, acute, due to ultraviolet radiation), L57.8 — Other skin changes due to chronic exposure to nonionizing radiation (skin, chronic, due to nonionizing radiation, specified NEC), L57.9 — Skin changes due to chronic exposure to nonionizing radiation, unspecified (skin, chronic, due to nonionizing radiation), L60.8 — Other nail disorders (nails), M46.1 — Sacroiliitis, not elsewhere classified (inflammatory, sacroiliac), M53.3 — Sacrococcygeal disorders, not elsewhere classified (sacroiliac joint), +30 more

Contextual Map

Every relationship of K00.8 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Run K00.8 with this related code in Claim Check

Hierarchy

Excludes2

Clinical classification (CCSR)

MS-DRG Grouper

MDC crossing

  • Pre-MDC[MDC crossing]: “Pre-MDC — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs. 175 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2027
  • MDC 03 — Diseases and Disorders of the Ear, Nose, Mouth and Throat[MDC crossing]: “Diseases and Disorders of the Ear, Nose, Mouth and Throat — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs. 5,151 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2027

Index entries

  • Change (s) (in) (of), color, tooth, teeth, during formation[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027
  • Discoloration, teeth (posteruptive), during formation[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027
  • Disorder (of), tooth, development, specified NEC[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027
  • Pre-eruptive color change, teeth, tooth[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027
  • Stain, staining, tooth, teeth (hard tissues) (extrinsic), intrinsic[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027

Nearest codes (10)

Change history

  • FY2016 — In the code set at ICD-10-CM adoption [Change history]— CMS release files (code change ledger) · icd10cm-fy2016

Deep reference

Published questions and FAQ, every source behind this page with its release and checksum, the date-of-service check and the complete change history.

Sources for this page

Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.

Code, title, tabular notes and index terms Official source data
CMS/CDC ICD-10-CM FY2027 tabular list, index and tables, effective October 1, 2026 Release, file and checksum · Publisher’s page
Coding guidelines Official source data
ICD-10-CM Official Guidelines for Coding and Reporting (FY2027), quoted by section Release, file and checksum · Publisher’s page
Claim edits Official source data
CMS Definitions of Medicare Code Edits — v44.0 (October 2026) Release, file and checksum · Publisher’s page
Inpatient payment groups Official source data
CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v44 Release, file and checksum · Publisher’s page
Change history and date-of-service validity Official source data
CMS ICD-10-CM release addenda, ingested release by release into the change ledger Release, file and checksum · Publisher’s page
Comparisons, relationships and the contextual map MedCoder structured relationship
Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears
Summary and FAQ answers MedCoder explanation
Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.

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 20, 2026 · All releases and sources

Labels on this page: Official source data · MedCoder structured relationship · MedCoder explanation. How to read the labels · All data sources and release dates · CMS coding rules

Cite this page

Reference this page in a research guide, syllabus or article. The release is included because code content changes each year.

MedCoder.ai. "K00.8 — Other disorders of tooth development." ICD-10-CM FY2027. https://medcoder.ai/icd10/code/k00.8-other-disorders-of-tooth-development

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Other disorders of tooth development

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027, and none are recorded for this code. Note changes are tracked from FY2027 only.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to K00.8 in its code family, with their registry titles.

View all codes in the K00 family